A person has 23 pairs of chromosomes and 46 in total.
Chromosomes consist of proteins that help in exiting the DNA in its proper form. Chromosomes are the amino acids that contain body genes, which determine the 3 body types of people that is the person will have endomorph, ectomorph, or ectomorph type of body.
In other words, we can say that the lipid or structure found in the nucleus of the cell is commonly known as chromosomes. Chromosomes are made up of thin villi of dna's, that contain all body genes. If there are any mistakes in the chromosomes then a person will suffer from a serious disease which can be present in a child by birth also.
Hence at last it is clear that chromosomes help in the formation of body genes and also the formation of DNAs.
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How did Chargaff's experiments affect the understanding of DNA's structure?
Chargaff’s experiments provided vital clues to understand the structure of DNA. His discoveries led to the establishment of the base-pairing rule, a fundamental concept of the structure of DNA. This was a groundbreaking concept at the time because it explained how DNA was able to replicate and transfer genetic information.
In the early 1950s, James Watson and Francis Crick used this information, along with other data, to propose a double helix model of DNA. Chargaff discovered that the amount of adenine (A) is roughly equal to that of thymine (T) and the amount of guanine (G) is roughly equal to that of cytosine (C). This is known as Chargaff’s rule.
It is essential because it helped to solve the riddle of DNA's structure. This showed that the base pairs were complementary to each other and that they paired with one another by forming hydrogen bonds. These hydrogen bonds were weak enough to be easily broken, allowing the double helix to separate during DNA replication.
Because of the base-pairing rule, it is easy to see how DNA is able to replicate. By breaking the hydrogen bonds between the base pairs, the two strands of DNA can unwind, and new complementary bases can be added to each strand. Because the new bases are complementary, the strands reform, forming two identical copies of the original DNA molecule.
Therefore, Chargaff's discovery of base pairing rules played an important role in explaining the structure of DNA.
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Amaya collected insects in the forest. She was unable to identify one unusual looking insect using a dichotomous key. Amaya concluded that the insect must be a new species. Which facts would support the conclusion that the insect is a new species?
The insect cannot be identified based on one of the first three questions.
The way the insect was collected may have caused damage to its exoskeleton and wings.
Several other thorough and up-to-date dichotomous keys also failed to identify the insect.
The normal diet of many insects in the forest has been seriously altered by a recent drought.
Answer: C
Explanation:
Which of the following terms refers to the practical applications of scientific knowledge?

A.
Technology

B.
Scientific methods

C.
Medicine

D.
Systems science
The answer is option A, Technology.
MARKING BRAINLIEST!! Choose all the answers that apply.
Water:
has a strong attraction to itself
is neither acidic nor basic
can dissolve most substances
contracts when it freezes
heats up and cools down more quickly than land
Spines on sea stars and sea urchins are modified into pedicellaria used for _____?
A. Feeding
B. Protection
C. Breathing
D. Reproduction
Answer:
B.
Explanation:
B. Protection
Spines on sea stars and sea urchins are modified into pedicellaria, which are small pincer-like structures used for protection. These pedicellaria help defend the sea stars and sea urchins against potential predators by capturing and deterring them. The spines, along with the pedicellaria, serve as a defense mechanism, helping to keep the organisms safe from harm in their marine environments.
Which timeline shows the correct order of contributions made to the discovery of DNAA scientist has a tomato plant with red-skinned tomatoes. It has one allele for red skin (R) and one for yellow skin (r).
Which describes the phenotype of the tomato plant?
red skin
yellow skin
homozygous
heterozygous
The correct order of contributions to the discovery of DNA is Friedrich Miescher, Phoebus Levene, Frederick Griffith, Avery, MacLeod, and McCarty, Erwin Chargaff, Rosalind Franklin and Maurice Wilkins, and James Watson and Francis Crick.
Regarding the tomato plant phenotype, if the plant has one allele for red skin (R) and one allele for yellow skin (r), the correct description for its phenotype would be heterozygous.
The correct answer would be heterozygous.
The correct order of contributions to the discovery of DNA can be represented by the following timeline:
1. Friedrich Miescher (1869): Miescher discovered a substance in the nucleus of cells, which he called "nuclein." This substance was later identified as DNA.
2. Phoebus Levene (1919-1929): Levene made significant contributions to understanding the chemical composition of DNA. He identified the components of DNA, including nucleotides and the sugar-phosphate backbone.
3. Frederick Griffith (1928): Griffith conducted an experiment with Streptococcus pneumoniae bacteria, demonstrating the concept of transformation. He observed that harmless bacteria could acquire the ability to cause disease by incorporating genetic material from other bacteria.
4. Avery, MacLeod, and McCarty (1944): Building on Griffith's work, this group of scientists identified DNA as the substance responsible for the transformation observed in bacteria. Their experiments provided strong evidence that DNA carries genetic information.
5. Erwin Chargaff (1949): Chargaff discovered that the amount of adenine (A) in DNA is equal to the amount of thymine (T), and the amount of cytosine (C) is equal to the amount of guanine (G). This finding became known as Chargaff's rules.
6. Rosalind Franklin and Maurice Wilkins (1952): Franklin and Wilkins used X-ray crystallography to obtain images of DNA's structure, including the famous "Photo 51" taken by Franklin. These images provided critical insights into DNA's helical structure.
7. James Watson and Francis Crick (1953): Watson and Crick, building on the work of others, proposed the double helix structure of DNA. They combined data from various sources to create a model that explained how DNA stores and transmits genetic information.
Regarding the tomato plant phenotype, if the plant has one allele for red skin (R) and one allele for yellow skin (r), the correct description for its phenotype would be heterozygous. The phenotype refers to the observable physical traits of an organism, and in this case, the presence of both red and yellow skin alleles results in a mixed phenotype with red skin being dominant over yellow skin. Therefore, the plant will exhibit red skin as its phenotype.
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An example of a reaction to a stimulus is
A. A boy smelling a flower
B. A person tapping on a friend’s shoulder
C. A loud clap of Thunder following lightning
D. Eyes blinking due to smoke in the air
Answer: an example of a stimulus is D
Explanation:
since stimulus is basically reacting to anything, it has to be D since smoke can cause blinking eyes, meaning they respond to smoke with flashing. thats why we shouldn't smoke ( i hope im correct and i hope this helps)
What protein filament comes off of the M-line within a sarcomere?
a. Z-disc
b. tropomyosin
c. Actin
d. Troponin
e. Myosin
The protein filament that comes off of the M-line within a sarcomere is myosin.
The correct option to the given question is option e.
The protein filament that comes off of the M-line within a sarcomere is Myosin. The sarcomere is the smallest functional unit of skeletal muscles, and it is formed by two main proteins: actin and myosin. The M-line is the part of the sarcomere that bisects the H-zone and is located at the center of the sarcomere. It is where the thick filaments (myosin) are anchored.
The M-line within a sarcomere serves as an anchor for the myosin filament and it has a unique structural function in maintaining the integrity of the sarcomere. It is composed of various proteins such as myomesin, titin, obscurin, and other proteins that keep the thick filament aligned and stable during muscle contractions.The myosin filament is responsible for the contractile function of the muscle.
During muscle contraction, myosin interacts with actin to produce the sliding filament mechanism that results in the shortening of the sarcomere. The myosin head binds to the actin filament and uses ATP to generate a force that pulls the thin filament (actin) towards the center of the sarcomere. This mechanism results in muscle shortening, which leads to movement. Therefore, the protein filament that comes off of the M-line within a sarcomere is myosin.
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after the earthquake drill suggestion
Answer:
tell earth to stop being mad
The picture shows active transport of sugar molecules into the cell.
Why do cells perform this process?
Extracellular
fluid
Cytoplasm
To communicate with one another
To obtain important nutrients
To obtain their genetic code
To store carbon dioxide
all women over age 50 (Women are four times more likely than men to develop osteoporosis.)
people with a small skeletal frame
Why do you think these groups have a high risk of osteoporosis?
Why does increasing the number of action potentials that a muscle fiber generates over time increase the amount of force it produces?
a. Because it prevents the SR being able to reuptake calcium at all
b. Because the voltage allows myosin to keep cycling
c. Because it prevents the RyR channels from ever being able to close
d. Because it causes more calcium to be released from the SR than the amount of calcium the SR can reuptake
Increasing the number of action potentials that a muscle fiber generates over time increases the amount of force it produces because it causes more calcium to be released from the sarcoplasmic reticulum (SR) than the amount of calcium the SR can reuptake.
The correct option to this question is d.
Calcium is required for the process of muscle contraction. During a muscle contraction, an action potential is generated which spreads down the sarcolemma and into the T-tubules. The T-tubules stimulate the sarcoplasmic reticulum to release calcium ions. Calcium ions bind to troponin which causes tropomyosin to move away from the actin-binding site on the thin filament, allowing myosin to bind to actin.
ATP is used to detach myosin from actin and then re-energize the myosin head to enable it to bind to another actin molecule further along the thin filament. Increasing the number of action potentials means that more calcium is released into the sarcoplasm. This increases the amount of myosin that can bind to actin which causes the muscle fiber to contract with greater force.
In conclusion, increasing the number of action potentials that a muscle fiber generates over time increases the amount of force it produces because more calcium is available to enable myosin to bind to actin, allowing for a stronger muscle contraction.
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Scientists have classified the sea otter as a keystone species in communities along the Pacific coast of North America. This classification depends on which property of the sea otters?
Question 4 options:
Sea otters have the highest population in the community.
Sea otters act to maintain a wide variety of other populations in the community by controlling the population of sea urchins.
Sea otters are the largest, most massive members of the community.
Sea otters provide food for all of the predators of the community.
Scientists have classified the sea otter as a keystone species in communities along the Pacific coast of North America based on their ability to maintain a wide variety of other populations in the community by controlling the population of sea urchins.
The sea otter plays an important role in its ecosystem as a keystone species. Keystone species are essential to the balance of their ecosystem, and removing them can cause drastic changes. The sea otter is a keystone species because it helps maintain a balance of power between different members of the ecosystem in which it resides.
Sea otters feed on sea urchins, which are herbivorous invertebrates that can cause significant damage to the ecosystem. Sea urchins feed on kelp, which can be damaged by too many sea urchins. Sea otters help to control the sea urchin population by feeding on them, which in turn allows the kelp forest to thrive.
Therefore, sea otters play an important role in the health and survival of the kelp forest, as well as other species that rely on the kelp forest for food and shelter.
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The pedigree below shows inheritance of an X-
linked trait in a family. Based on the inheritance
pattern, what is the genotype of the person in
generation III (third generation), letter b?
Generation
11
111
TOOOD
500
Pedigrees have multiple uses. One of them is getting to know an individual's genotype. In the e xposed example, the individual IIIb is X-Y.
What is a pedigree?
A Pedigree is the representation of a family's history. This graph is used to track a trait through different generations, and analyze the inheritance pattern of a particular gene and its expression.
It is a tool used to understand how genes are transmitted from the parental generation to the descendants, and what are the probabilities of inheriting them.
In sex linked inheritance, we need to remember that the gene coding for the trait is linked to the sex-chromosome (in this case, the X-chromosome).
In pedigrees, usually affected individuals or individual carring the trait are representes with solid black figures.
Individual IIIb is a black square, meaning it is an affected man. Its genotype is X-Y. The X-chromosome is carrying the recessive allele (-).
In the attached files you will find the pedigree with the genotype of each member of the family. Notice that individuals X+X represent either homozygous dominant or heterozygous females.
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All of the following are examples of erosion EXCEPT:
A. A glacier picks up boulders as it moves.
B. A flood washes over a riverbank and the water carries small soil particles.
C. The wind in the desert blows sand against a rock.
D. An icy winter causes the pavement in a road to crack.
The slope of the line below is -5. Which of the following is the point-slope
form of the line?
A. y + 7 = -5(x-2)
B. y+ 7 = 5(x-2)
C. y-7 = -5(x+2)
D. y-7= 5(x + 2)
-10
(2,-7)
10
Answer:
A
Explanation:
To determine the point-slope form of a line, we need a point on the line and the slope of the line. Given the slope of -5 and the point (2, -7), we can use the point-slope form of a linear equation:
y - y1 = m(x - x1), -> this is point slope form
where (x1, y1) represents the coordinates of the given point, and m represents the slope.
Substituting the values into the equation, we have:
y - (-7) = -5(x - 2).
Simplifying this equation, we get:
y + 7 = -5(x - 2).
Thus, the point-slope form of the line is A. y + 7 = -5(x - 2).
22g per 1000ml of liquid, how much g for 100ml liquid
22g per 1000ml of liquid, 2.2g is required for 100ml liquid.
We can say that the above statement is correct with the help of the following verification:
1000ml=22g
1ml=22g/1000ml
100ml=22g/1000ml × 100
100ml=2.2g
Hence at last we can say that for 100 ml of liquid 2.2g is required.
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Select the correct answer.
Bacillus anthracis, the bacterium that causes the deadly disease anthrax produces thick endospores.
What is the significant role of spore formation in the reproductive cycle of this bacterium?
A.
Helps bacteria multiply quickly and grow in colonies
B.
Helps bacteria survive extreme conditions and later develop into fully functional bacterial cells
C.
Helps bacteria develop resistance to antibiotics
The significant role of spore formation in the reproductive cycle of the bacterium, Bacillus anthracis, is that it helps bacteria survive extreme conditions and later develop into fully functional bacterial cells.
The correct option to the given question is option b.
Bacillus anthracis, the bacterium that causes anthrax, produces thick endospores which plays a significant role in the reproductive cycle of this bacterium. Spore formation is necessary to help bacteria survive extreme conditions and later develop into fully functional bacterial colony.Spore formation is a mode of asexual reproduction used by some bacteria. The bacterium forms a hardy, thick-walled spore that protects the cell's genetic material in periods of environmental stress.
Spore formation is a key survival strategy for many bacterial species, allowing them to remain dormant for years or even centuries until conditions become favorable again.How Bacillus anthracis uses spore formation?Bacillus anthracis produces spores that are adapted for surviving in the soil or on plant surfaces for long periods of time. The spores can remain viable for many years, waiting to be ingested by a grazing animal or human. Once the spores are ingested, they can enter the bloodstream and cause the deadly disease anthrax. Spores are highly resistant to heat, radiation, and chemicals, which makes them an ideal tool for biological warfare.
Bacillus anthracis produces spores that can remain dormant for years, waiting for a host to come along. Once ingested, the spores can germinate into fully functional bacteria, which then multiply rapidly and produce lethal toxins that can kill the host. The thick endospore shell allows the bacteria to survive in harsh environments, including soil, water, and even space. Overall, spore formation is a critical component of the reproductive cycle of Bacillus anthracis, allowing the bacterium to persist and survive in a variety of different environments.
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Which are correct examples of physical (P), chemical (C), and biological (B) barriers?
Answer:
Physical Barriers (P): Skin , Mucus Membranes
Chemical Barriers (C): Stomach Acid , Antimicrobial Peptides
Biological Barriers (B): Gut Flora , Immune Cells
Explanation: It's important to note that these examples are not exclusive to one type of barrier, as they can overlap in their functions. The categorization as physical, chemical, or biological barriers helps to understand different mechanisms that our body employs to defend against pathogens.
Natural processes that add carbon to the atmosphere include: (check all that apply)
Burning of fossil fuels
ocean uptake
ocean loss
photosynthesis
plant respiration
animal respiration
soil respiration / decomposition by bacteria
volcanic activity
litter fall
- Burning of fossil fuels
- Ocean uptake
- Ocean loss
- Photosynthesis
- Plant respiration
- Animal respiration
- Soil respiration / decomposition by bacteria
- Volcanic activity
- Litter fall
Compare and contrast an artery and vein
To summarize: arteries and veins differ in terms of their structure, direction of blood flow, presence of valves, oxygenation, blood pressure, blood volume, and appearance. Arteries carry oxygenated blood away from the heart, have thicker walls, higher pressure, and no valves, while veins carry deoxygenated blood towards the heart, have thinner walls, lower pressure, and contain valves to ensure one-way blood flow.
A crime scene has the following blood splatter against a wall 2 feet from where the victim was standing what type of impact would have caused this pattern 
Answer:How It’s Done. Bloodstain Patterns that May be Found. Bloodstains range in both amount of blood and type of pattern—from pools of blood around a body to obvious spatter patterns on the walls to microscopic drops on a suspect’s clothing.
Explanation:
as a child, alex was short for his age. but during his teenage years, his height increased and he surpassed most of his friends. What must have occurred to create his growth spurt?
During Alex's teenage years, his growth spurt was likely triggered by the onset of puberty. This is a natural process in which significant physical and hormonal changes occur, leading to rapid growth and development in adolescents.
Puberty is a stage of development characterized by various hormonal changes that impact physical growth and maturation. During puberty, the body undergoes significant transformations, including the growth of skeletal bones, muscle development, and changes in body composition.
These changes are primarily influenced by the release of hormones such as growth hormone and sex hormones (such as testosterone in males and estrogen in females).
In Alex's case, it is likely that his initial delay in growth during childhood was due to a slower or delayed onset of puberty compared to his peers. However, once he entered his teenage years and experienced the hormonal changes associated with puberty, his growth spurt occurred, allowing him to catch up and even surpass his friends in height.
It's important to note that the timing and extent of growth spurt can vary among individuals, influenced by genetic factors, overall health, and nutrition.
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Suggest why giraffes cannot live in the Arctic.
Hmmm.
Giraffes, for starters, do not have the proper 'coat' to survive in the Arctic, they'd simply freeze to death.
Giraffes are also not naturally found in cold environments, instead, rather hot ones. They have evolved particularly to regulate their body temperature accordingly by the hot temperatures, NOT for cold.
Hope that helps a little.
Giraffes cannot live in the Arctic due to its cold weather and snowfall.
As we all know that giraffes cannot be able to survive in the Arctic region because there is too much cold weather and also giraffes could not have enough coats of fur on their skins which can be able to protect them from the cold of the Arctic.
Giraffes used to live in the open wide areas of grassland so that they can easily look in all directions which helps them to protect themselves from upcoming dangers like wild animals.
Hence, at last, we can say that giraffes are more likely to live in areas where there are no immense forests and also not have cold weather.
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What is the difference in mechanism between protein entry into ER and integration of transmembrane proteins into ER membrane?
Protein entry into the ER lumen is facilitated by signal sequences present in the proteins whereas transmembrane protein integration into the ER membrane requires transmembrane domains.
Protein entry into the ER lumen (or insertion into the ER membrane) and integration of transmembrane proteins into the ER membrane differ in their mechanism. The following is a description of the differences between these two mechanisms.
Protein entry into the ER lumen is facilitated by signal sequences present in the proteins. Signal sequences, or signal peptides, are short stretches of amino acids located at the N-terminal end of proteins that are destined for the ER lumen or secreted outside the cell. Signal sequences interact with signal recognition particles (SRP), which then transport the protein to the ER membrane. Afterward, the SRP binds to the SRP receptor, and the protein is translocated into the ER lumen. The nascent protein is then translated, modified, and folded in the ER lumen.In contrast to protein entry into the ER lumen, transmembrane protein integration into the ER membrane requires transmembrane domains.
Transmembrane domains are composed of hydrophobic amino acids that cross the hydrophobic lipid bilayer of the membrane. Transmembrane proteins are inserted into the ER membrane through two mechanisms: The first mechanism is the signal anchor sequence, where a stop-transfer anchor sequence retains the protein in the membrane. The second mechanism is the signal peptide cleavage, where signal peptides in the protein cleave after they enter the ER lumen, and the transmembrane domain remains in the membrane. The protein is then translated and folded in the membrane.
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Mutations can be categorized based on the kind of effect they have on an organism. Blue eyes in humans are a result of a mutation in the OCA2 gene, which controls the production of pigment melanin in the iris.
This mutation is an example of a
mutation. Such mutations have
effect on an organism’s survival.
The mutation in the [tex]OCA_2[/tex]gene that causes blue eyes in humans is an example of a non-lethal mutation. Such mutations have a neutral or insignificant effect on an organism's survival and do not significantly impact its ability to reproduce and pass on the mutation to future generations.
The mutation in the [tex]OCA_2[/tex] gene that leads to blue eyes in humans is an example of a non-lethal mutation. This specific mutation affects the production of melanin, the pigment responsible for the coloration of the iris. Individuals with this mutation have reduced melanin production, resulting in lighter eye color.
Mutations can be categorized based on their effects on an organism. Lethal mutations cause severe impairments that prevent the organism from surviving. These mutations are typically incompatible with life and often result in spontaneous abortion, stillbirth, or early death after birth. Examples of lethal mutations include those affecting vital organs or crucial developmental processes.
In contrast, non-lethal mutations have a neutral or insignificant effect on an organism's survival. These mutations may result in variations in physical traits, such as eye color, hair color, or height, but do not significantly impact the organism's ability to survive and reproduce. Non-lethal mutations often do not confer a selective advantage or disadvantage, and their occurrence is driven by genetic variation and chance.
The mutation in the [tex]OCA_2[/tex] gene that causes blue eyes is considered a non-lethal mutation because it does not adversely affect an individual's ability to survive and reproduce. While eye color may vary, it does not impact overall fitness or reproductive success. Therefore, individuals with blue eyes can thrive and pass on the mutation to future generations without any significant hindrance.
It is important to note that the categorization of mutations as lethal or non-lethal can vary depending on the specific context and species. Mutations that are non-lethal in one species may have different effects in another. Additionally, the impact of a mutation on an organism's survival and reproductive success can be influenced by environmental factors and genetic interactions.
In summary, the mutation in the [tex]OCA_2[/tex] gene that leads to blue eyes in humans is an example of a non-lethal mutation. Such mutations have a neutral or insignificant effect on an organism's survival and do not significantly impact its ability to reproduce and pass on the mutation to future generations.
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Mona is making a model of the zebra mussels' habitat. She wants her
model to show how matter moves to and from the zebra mussel. The best
model for her to make is.
A. a producer group
B. a consumer group
C. an exchange
OD. a food chain
1 point
The best model for Mona to make in order to show how matter moves to and from the zebra mussel is Option D. a food chain.
A food chain represents the flow of energy and matter through different organisms in an ecosystem. It shows the transfer of nutrients and energy as one organism consumes another.
In the case of zebra mussels, they are filter-feeding organisms that extract microscopic food particles, such as phytoplankton, from the water. These phytoplankton serve as the primary producers in the ecosystem, converting sunlight and nutrients into organic matter through photosynthesis. As zebra mussels consume the phytoplankton, they act as primary consumers.
The food chain would continue with secondary consumers, such as small fish or insects, that feed on the zebra mussels. Tertiary consumers, like larger fish or birds, may prey on the secondary consumers. Each step of the food chain represents the transfer of matter and energy from one organism to another.
By creating a model of a food chain, Mona can visually represent the flow of matter, specifically nutrients, to and from the zebra mussel. It demonstrates the interconnectedness of different organisms in an ecosystem and highlights the important role of zebra mussels as filter feeders in the aquatic food web. Therefore the correct option is D
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Select the correct answer from each drop-down menu.
Fiona is writing a book on coral life. She is writing about the feeding pattern of corals. Help her complete the sentences.
as a byproduct of cellular respiration. The
The corals produce
and provide organic molecules as food to the corals.
Reset
Next
utilize this to carry out photosynthesis,
The correct answer for the first drop-down menu is:
"Oxygen is released into the water"
The correct answer for the second drop-down menu is:
"Zooxanthellae live within the tissues of the corals"
Corals have a mutualistic relationship with a type of algae called zooxanthellae. These algae live within the tissues of the corals and carry out photosynthesis. During photosynthesis, the zooxanthellae utilize carbon dioxide and sunlight to produce organic molecules, such as glucose, as a byproduct.
In this process, oxygen is released into the water as a waste product of photosynthesis.
The corals benefit from this arrangement by obtaining a significant portion of their energy needs from the organic molecules produced by the zooxanthellae.
The organic molecules serve as food for the corals, providing them with the necessary nutrients for their growth and survival.
Overall, the symbiotic relationship between corals and zooxanthellae allows the corals to obtain a substantial portion of their food through the products of photosynthesis carried out by the algae.
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To help Fiona complete the sentences:
The coral produce 1) carbon dioxide as a byproduct of cellular respiration is released into the water as a byproduct of cellular respiration. option AThe 2) zooxanthellae utilize this to carry out photosynthesis, producing oxygen and providing organic molecules as food to the corals. option AWhat is the use of carbon dioxide and zooxanthellae?Carbon dioxide is released into the water as a byproduct of cellular respiration. The zooxanthellae, which are algae that live inside the coral, utilize this to carry out photosynthesis, producing oxygen and providing organic molecules as food to the corals.
The zooxanthellae are photosynthetic algae that live in a symbiotic relationship with corals. The algae provide the corals with food, and the corals provide the algae with a safe place to live and nutrients. This relationship is essential for the survival of both the corals and the algae.
The corals are able to feed on a variety of other things as well, such as plankton and small fish. However, the zooxanthellae are the main source of food for most corals.
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Complete question:
Select the correct answer from each drop-down menu.
Fiona is writing a book and coral life. She is writing about the feeding pattern of corals. her complete the sentences.
The coral produce 1) as a byproduct of cellular respiration. The 2) utilize this is to carry out photosynthesis, and provide organic molecules as food to the corals.
OPTIONS:
1
A) carbon dioxide
B) nitrogen
C) oxygen
2
A) zooxanthellae
B) sea grasses
C) mangroves
Which two cell structures are found in eukaryotic cells but not in prokaryotic cells?
Answer: Endoplasmic reticulum, microtubules, and the Golgi apparatus
Explanation:
Look at a diagram of these two different cells
Classifying Properties
For each property listed, identify the type of element it describes.
Very good electrical conductivity:
Amphoteric, able to form acidic OR basic compounds:
Gaseous at room temperature:
Solid at room temperature:
Brittle:
For each property listed, identify the type of element it describes:
Very good electrical conductivity: Metal
Amphoteric, able to form acidic OR basic compounds: Metalloid
Gaseous at room temperature: Nonmetal
Solid at room temperature: Metal, Metalloid
Brittle: Nonmetal
In the properties listed, "Very good electrical conductivity" is associated with metals. Metals are known for their high electrical conductivity due to the presence of delocalized electrons that can easily move and carry electric charges.
"Amphoteric, able to form acidic OR basic compounds" describes metalloids. Metalloids exhibit properties of both metals and nonmetals, including the ability to form compounds that can be either acidic or basic.
"Gaseous at room temperature" is a characteristic of nonmetals. Nonmetals typically exist as gases at room temperature, such as oxygen, nitrogen, and chlorine.
"Solid at room temperature" can apply to both metals and metalloids. Most metals are solid at room temperature, while some metalloids, such as silicon and germanium, are also solid under normal conditions.
"Brittle" is a property associated with nonmetals. Nonmetals tend to be brittle, meaning they are easily broken or shattered when subjected to stress.
This is because the bonding between atoms in nonmetals is usually covalent and lacks the flexibility and strength of metallic bonding.
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