Answer:
The answer is A. educated guess based on observations, set of tested hypothesis that explains why something happens.
A hypothesis is an educated guess based on observations, while a theory is a set of tested hypothesis that explains why something happens. The correct option is A.
What is a hypothesis?A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation is referred to as hypothesis.
A theory is a set of trailed hypothesis that explains why something happens, whereas, a hypothesis is an assumption based on observations.
Thus, the correct option is A.
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which of the following characteristics is true about an organism whose remains formed a good index fossil.
a.) it must be unique orgsnism
b.) it must be an organism that lived all around the world
c.) it must be an organism that lived for a very short time period
d.) all of these characters are important fo an index fossil
Answer:
d.) all of these characters are important fo an index fossil
Explanation:
Organisms have the characteristics to die and their remains form fossils. A fossil is a preserved remain of a previously living organism. Index fossils are fossils used to tell us more about a particular period. However, before the fossil remains of an organism can be used for this purpose, it must have specific characteristics including the following:
- It must be a unique/distinct species
- It must be geographically abundant
- It must live only a short period of time
Based on these above characteristics of a good index fossil, an organism whose remains must form a good index fossil must possess ALL THE MENTIONED CHARACTERISTICS MENTIONED IN THE OPTIONS.
Answer:
d
Explanation:
Index fossils have to be unique and abundant to be easily identified, abundant means it must be around the world. Index fossils usually live for a short period of time. So D is the correct answer.
A scientist extracts a molecule from a cell that includes phosphorus, a nitrogen base and a sugar. What macromolecule did the scientist most likely extract to
study?
A. Carbohydrate
B. Protein
C. Triglyceride
D. Nucleic Acid
Answer:
D
Explanation:
The correct answer would be Nucleic Acid.
A typical nucleic acid has 3 components which include:
A purine or pyrimidine nitrogenous baseA phosphate groupA 5-carbon sugarThe purine base includes adenine and guanine while the pyrimidine base includes thymine/uracil and cytosine. The 5-carbon sugar could be ribose or deoxyribose depending on if the nucleic acid is ribonucleic or deoxyribonucleic acid.
The only macromolecule that contains the 3 components of the options A to D is the nucleic acid. Hence, the correct option is D.
c) Explain why antibiotics can be used to treat bacterial infections, but not viral infections
Answer:
antibiotics cannot kill viruses, they can only kill bacteria
Explanation:
where do the small molecules like water pass through the membrane?
Answer:
Water is transported across the membrane by the aquaporin (AQP) family of passive channels.
Explanation:
ok is that the answer you are looking for?
What percent of solar radiation is filtered by clouds and may cause sunburn on cloudy days? 3 percent 14 percent 22 percent 31 percent
Answer: C (22 percent)
Explanation: edge 2021
The percent of solar radiation that is filtered by clouds and may cause sunburn on cloudy days is 22 percent.
What is solar radiation?Solar radiation refers to the radiant energy emitted by the Sun, which may be harmful to human health.
Direct solar radiation may result harmful to humans because it may cause:
BurnsMutations in skin cellsSolar radiation contains Ultraviolet (UV) light, which may cause damage in DNA even on cloudy days and thus produces mutations.
In conclusion, the percent of solar radiation that is filtered by clouds and may cause sunburn on cloudy days is 22 percent.
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During an infection, white blood cells travel to the infected site and phagocytize the pathogens. After phagocytosis, primary lysosomes fuse with the phagocytic vesicle to form a larger vesicle called a secondary lysosome. The reason for this is:
answer choices
a) to introduce antibodies to the phagocytic vesicles
b) to wrap the pathogen in additional membrane, rendering them harmless
c) to prepare the bacteria for export from the body
d) to mix the pathogens with strong hydrolytic enzymes and destroy them
Answer:
d) to mix the pathogens with strong hydrolytic enzymes and destroy them
Explanation:
phagocytosis occurs when a cell engulfs a molecule to break it down.
white blood cells are known as phagocytes as they ingest invading bacteria to break them down and destroy them.
The bacteria is first enclosed by a phagocytic vesicle that lysosomes fuse with on fusing lysosomes then break down the bacteria by mixing them with strong hydrolytic enzymes.
Choose from: Art & Music, Making Clothing, Recording Information, Burial, Carrying & Storing, Hearths & Shelters, Stone Tools, Getting Food, Primate Behavior, & Footprints. What are 3 things you learned
Answer:
I learned from recording information
always listen attentively never slack offmake sure to take notes accordinglyWrite the common food chain of a pond ecosystem.
Explanation:
In a freshwater aquatic ecosystem like a pond, the organisms in the food chain include algae, small animals, insects and their larvae, small fish, big fish and a fish-eating bird or animal
pls mark brainliest
Answer:
Thanks for the points <3!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Explanation:
tkhthy
I need help with this question for Biology:
Diffusion and osmosis are both vital to cell function. Diffusion and osmosis are similar in that they are both types of?
A) protein synthesis processes
B) passive transport processes
C) cellular replication processes
D)cellular metabolism processes
The respiratory system _____.
does not work with any other systems
removes carbon dioxide from the body
supplies the body with oxygen
includes the lungs
does not need blood to work
Answer:
Reacts to external environmental conditions and protects the body's deeper tissues; Includes skin, hair, nails, and sweat glands.
Explanation:
Answer:
2. Removes Carbon Dioxide from the body
3. Supplies the body with Oxygen
4. Includes the lungs
Explanation:
Hope it helped!
describe what happens to the chromosomes in the anaphase telophase. Enter your answer in the space provided.
An RNA sequence includes 12 nitrogenous bases, AUGGUGCAUGUC. What is the maximum number of amino acids for which this sequence could code?
A). 4
B). 3
C). 2
D). 12
Answer:
In the mRNA sequence AUGGUGCAUGUC the maximum number of amino acids that can be encoded is 4 (option A).
Explanation:
Messenger RNA (mRNA) has a sequence of nitrogenous bases produced by the transcription of a DNA strand. This sequence of bases is organized in triplets or codons —made up of 3 nitrogenous bases— that can encode an amino acid, or mark the beginning or end —STOP codon—of protein synthesis.
From the sequence:
AUGGUGCAUGUC
Four codons are obtained, each of which encodes a different amino acid:
Codons: AUG-GUG-CAU-GUC
Amino acids: Met - Val - His - Val
Methionine Valine Histidina and Valine are the four amino acids encoded by the 12 nucleotide sequence of the mRNA.
O Biology is the science of exception, Justify it with
examples
Answer:
Biology deals with living organisms which show enormous variations and, therefore, numerous exceptions are found.
There are two reasons:
Each organism evolved in a different way to adapt to their environments the best way possible.
It is not really so. There are common rules to biology as in physics, but the problem is we study much more complex systems. More complexity results in more emergent properties, thus they appear to be exceptions.
Biology deals with living organisms which show enormous variations and, therefore, numerous exceptions are found.
justifying it with examples:
1. All living cells have a nucleus except mature red blood cells of mammals.
2. Red blood cells of all mammals are without nucleus except those of camel.
3. Stem is the part of plant above the ground but potato, corm and ginger are underground stems.
4. Blood of all vertebrates is red due to the presence of hemoglobin but a shark, Carcharhinus, has colorless blood.
by the above examples you can see that biology the science of exception.
Explanation:
Pleas give me an answer if you actually really know the answer because everybody is giving different answers, pls
Answer:
plants
Explanation:
plants are green
Answer:
Some kind of organisms that chloroplasts are found in are green plants and algae, also photosynthetic tissues that are not green, such as red leaves, etc.
Explanation:
Hope it helps!
Explain two ways materials can enter the cell through passive transport. Include in your answer: the types of substance that is transported, the concentration gradient, and any structures in the cell membrane required to be used.
Explain two ways materials can enter the cell through passive transport. Include in your answer: the types of substance that is transported, the concentration gradient, and any structures in the cell membrane required to be used.
Answer:
Osmosis and facilitated diffusion are two forms of passive transport that are integral to cellular transport mechanisms.
Explanation:
Cells surrounded by a bilipid layer or plasma membrane are amphiphilic, with their polar, hydrophilic lipid heads facing outward, while their hydrophobic non-polar lipid tails facing each other inward.
Although lipid-soluble molecules travel quickly through the bilayer, traveling across its surface into the cell is often difficult for charged and large molecules. Thus, transport proteins, pores and gated channels, transmembrane channels, embedded within the membrane, help to preserve selective permeability.
Across plasma membranes as a form of passive transport in cells, substances move via:
osmosis - water molecules readily pass through the membrane; the molecules move from high concentration regions to low concentration regions at will through the membrane- they move down their concentration gradientfacilitated diffusion - channel proteins allow charged ions to move across the membrane. Sodium ions are able to pass freely through specialized sodium channel pores into some cells. These channels always remain open- the ions move down their concentration gradient.
How do the chromosomes of an offspring cell compare with the chromosomes of the parent cells?
Answer:
Offspring will usually have half the amount of chromosomes from each parent. For example: Mother Human= 46 Chrom, Father Human= 46 Chrom, Baby Human= 23 Chrom from father and 23 Chrom from mother.
There are just half as many chromosomes. Typically, children inherit half of each parent's chromosomes.
What are chromosomes?As an illustration, the mother and father of a human have 46 chromosomes each, and the baby has 23 chromosomes from each parent.
The sister chromatids reach their opposing poles at this final stage of mitosis. The cell's tiny nuclear vesicles start to reform around the chromosome cluster at each pole. As the process by which the parent cell transfers its DNA to its two daughter cells, mitosis is a crucial component of cell division.
Homologous chromosomes align in pairs during meiosis. Chromosomes are independent of one another during mitosis.
Therefore, half as many chromosomes the chromosomes of an offspring cell compare with the chromosomes of the parent cells.
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Scientists are trying to prevent some genetic diseases by studying and learning how to ____________ them
Answer:
treat or control
Which of the following is a way ATP is used in cellular processes? Select all that apply.
detoxification
muscle contraction
oxygen production
biosynthesis
polyatomic ions
Answer:
detoxification muscle contraction biosynthesisExplanation:
ATP, adenosine triphosphate, is a molecule high in chemical energy. It is made up of a ribose ring, the nitrogenous base adenine, and 3 phosphate groups in a phosphoester linkage at carbon 5
ATP is broken down, losing a phosphate group, and energy is released from breaking the phosphate bond. The other two phosphates in ADP are lined by stable p hosphoanhydride bonds.
[tex]ATP+H_{2}O[/tex] → [tex]ADP+Pi+free \hspace{0.1cm} energy[/tex]
In the body, ATP molecules are used to provide energy for detoxification in forms of active transport; fueling biosynthesis- the modification of different compounds to form macromolecules; and muscle contraction, providing energy to myosin, and braking myosin actin cross-linkages to free myosin for other contractions.
What are some drawbacks to biotechnology?
Answer:
Spread of Blight in Crops Biotechnological innovations have greatly increased the production of food in the America. But according to a particular research, the creation of big farms and feed heaps will result to the spread of blight. This type of plant disease or injury is denoted by the formation of lesions, death of parts like tubers and leaves, and withering. Furthermore, the manipulation of gene pools can shrink the possibility of diversity.
Explanation:
(greengarageblog.org)
Which statement correctly describes the reason for the high specific heat of water?
A.) Water has unusually strong hydrogen bonding. These bonds require extra energy to break. Therefore, water has a high specific heat.
B.) The oxygen and hydrogen atoms in water molecules are bonded together with strong covalent bonds. The bonds require extra energy to break. Therefore, water has a high specific heat.
C.) Water is made of ions. The attraction between ions requires extra energy to break. Therefore, water has a high specific heat.
D.) The oxygen and hydrogen atoms in water molecules are bonded together with strong ionic bonds. The bonds require extra energy to break. Therefore, water has a high specific heat.
The answer is A.) Water has unusually strong hydrogen bonding. These bonds require extra energy to break. Therefore, water has a high specific heat.
Please help me if you help and get it right ill give you a brainy thing
Answer:
Ribosomes
Explanation:
A J-shaped curve is called a(n) _______. a. logistic growth curve b. exponential growth curve c. linear growth curve d. population growth curve
Answer:
b exponentail growth curve
Explanation:
just took the test
Answer:
BExplanation:
is the answer.
The ____ likes to play a lot.
a. lion
b. gorilla
c. snake
d. monkey
Answer:
D
Explanation:
Its either a gorilla or monkey,but monkey sounds right.
Happy Thanksgiving ;D
Answer:
monkey
Explanation:
How do changes in wind currents affect the short-term climate in a region?
88
O Prevailing winds can cause a milder climate with heavy rain.
Global winds can cause a longer summer.
O Prevailing winds can cause heavy rains or a dry climate.
O Global winds can cause a longer winter.
The changes in wind currents affect the short-term climate in a region occurs prevailing winds can cause heavy rains or a dry climate.
Why is the climate changing?Climate change can be caused by natural processes on the Earth itself or by external forces, including variations in the intensity of sunlight, or even more recently, by human action.
The changes in the sea currents which affect the waters and the climate of the region. Thus the answer is prevailing currents created large rain. These events lead to the creation of the changes that lead to the formation of the weather changes.
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Answer:
C. Prevailing winds can cause heavy rains or a dry climate.
Explanation:
Prevailing winds can cause heavy rains or a dry climate.
Prevailing winds can cause heavy rains or a dry climate.
Prevailing winds can cause heavy rains or a dry climate.
Prevailing winds can cause heavy rains or a dry climate.
Prevailing winds can cause heavy rains or a dry climate.
Prevailing winds can cause heavy rains or a dry climate.
Prevailing winds can cause heavy rains or a dry climate.
Prevailing winds can cause heavy rains or a dry climate.
Prevailing winds can cause heavy rains or a dry climate.
Prevailing winds can cause heavy rains or a dry climate.
PLEASE HELP! Need this today ASAP!
Seismograms record the forces of earthquakes. How do these seismograms help scientists learn about the composition of the Earth?
(My teacher asks for a minimum of 5 sentences)
Explanation:
Earthquake waves produces two very important waves that useful in studying the composition of the earth.
These waves are P and S-waves.
P-waves are primary longitudinal waves that propagates through any material medium. S-waves are secondary transverse waves that can only pass through solids but not fluids.Using these waves we can know the composition of the earth.
What is the correct order of a food chain containing the following organisms: quail (bird), desert shrub, coyote, snake?
Answer:
desert shrub - quail - snake - coyote
Explanation:
the quail bird eats the desert shrub, the snake eats the quail, the coyote (a-pex predator in this chain) eats the snake.
Which of the following is an example of a free-running cycle?
a) A dog that sleeps all night and stays awake all day
b) A cat that wakes at night and sleeps during the day
c) A dog that sleeps and wakes at various times of the day and night
d) A baby that sleeps four hours at a time, then awakens to eat
Answer:
A.
Explanation:
Its True because the dog sleep like human
Pls help me with this question
B. Explain the steps used to separate chalk powder, rice grains and stones
Answer:
chalk powder can be seaprated by dissolving with water
rice grains remain
stones by hand
Answer:
chalk with the machine and rest all with hands
Explanation:
Chemically speaking, enzymes are composed of chains of _________________, and they are considered to be a type of__________________.
Answer:
chains of amino acid;
type of protein
Which system helps regulate body
temperature and water loss?
A. Outegumentary
B. Integumentary
C. Excretory
Answer:
b
Explanation:
Integumentary system helps regulate body temperature and water loss. Thus option B is correct.
What is the integumentary system?In our body integumentary system is present in the outer layer. It’s made up of your skin, nails, hair, and the glands and nerves on your skin. It acts as a physical barrier — protecting your body from bacteria, infection, injury and sunlight. It also helps regulate your body temperature and allows you to feel skin sensations.( like hot and cold.)
Integumentary system present in skin:-
Dermis, epidermis, Hypodermis
Integumentary system present in nails:-
Nail plate, Nail bed, Cuticle, Matrix, Lunula
Integumentary system present in hair:-
Hair shaft, Hair bulb
Functions of integumentary system:-
Provides physical protection against bacteria and germs.Protects you from the sun’s ultraviolet (UV) rays and sunburn.Helps you feel heat, cold and detect other sensations.Synthesizes vitamin D.
Hence, integumentary system is more important in body for the regulate temperature and water loss. Thus option B is correct.
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