Answer:
D. Can selection in nature also lead to a new species over time?
Explanation:
Stars are powered by nuclear fusion reactions. please select the best answer from the choices provided t f
Answer:
That statement is true, all stars are powered by a form of fusion.
Compared to the amount of genetic information contained in a normal human body cell, the amount contained in a normal human sperm cell is:.
The complete question is
Compared to the amount of genetic information contained in a normal human body cell, the amount contained in a normal human sperm cell is
A. the same
B.twice as much
c. one-half as much
D. one-fourth as much
One-half as much. Thus, option "C" is correct.
How, explain your answer?The amount of genetic information contained in a normal human sperm cell (23 chromosomes) is one-half as much as the information contained in a normal human body cell (46 chromosomes).
Sperm cells are produced during meiosis, a specialized division process that reduces the number of chromosomes in half, generating haploid daughter cells.
Thus, option "C" is correct.
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Assume that k and m are two unlinked genes that affect hearing. The dominant k allele is necessary for hearing, and the dominant m allele causes deafness regardless of the other genes present. Given this, what fraction of the offspring of parents with the genotypes kkmm and kkmm will most likely be deaf?.
The percentage that the offspring will be deaf is 75%. Two punnet squares are needed each for km and Kkmm individuals. In punnet square 1, half of the genotypes are Km and km while half are Mm and kk in punnet square 2. The two punnet squares are then combined to form a final one where a quarter of the offspring is deaf.
What does genotype mean?In a wide sense, the word"genotype" refers to the genetic makeup of an organism; it defines an organism's complete set of genes. In a more thin sense, the term can be used to guide the alleles, or variant forms of a gene, that are carried by an organism.
Thus, this could be the answer.
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What type of competition is pictured above?
O Interspecific competition
Intraspecific competition
competitive exclusion
Niche competition
Answer:
Interspecific competition
Explanation:
This is competition between different species
Intraspecific competition is between the same species
Identify the root tissues.
a. _________
b. _________
c. _________
Which statement best explains the process of transcription as it relates to protein synthesis and gene expression?
Group of answer choices
A portion of an mRNA molecule is used to produce a chain of amino acids.
A ribosome is used to create a polypeptide.
A tRNA molecule is used to carry an amino acid to the ribosome.
A portion of a DNA molecule is read to produce an mRNA molecule.
The process of transcription related to protein synthesis and gene expression as in this a portion of a DNA molecule is read to produce an mRNA molecule. Thus, the correct option is D.
What is Transcription?Transcription is the process through which a cell makes an mRNA (messenger RNA) copy of a piece of the DNA segment. This RNA copy called as messenger RNA (mRNA), carries the genetic information which is needed to synthesize proteins in a cell. The messenger RNA carries the information from the DNA sequence in the nucleus of the cell to the cytoplasm, where the proteins are synthesized.
A portion of a DNA molecule is read to produce an mRNA molecule. It is the best explains the process of transcription as it relates to protein synthesis and gene expression.
Therefore, the correct option is D.
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Gene therapy is the ___________ of working _______________ of a _______________ into the ____________ of a ______________ with a genetic ______________ in an attempt to _______________ the disorder.
Gene
Extraction
Correct
Person
Insertion
Cells
Disorder
Copies
Answer:
heart disease, diabetes, hemophilia and AIDS.
Explanation:
Gene therapy replaces a faulty gene or adds a new gene in an attempt to cure disease or improve your body's ability to fight disease. Gene therapy holds promise for treating a wide range of diseases, such as cancer, cystic fibrosis, heart disease, diabetes, hemophilia and AIDS.
How is carbon released into the atmosphere?
A evaporation
B cellular respiration
C rocks
D specialized Bacteria
Answer:
B. cellular respiration
Explanation:
Mary and larry each have free earlobes and dark hair. they are both heterozygous. (e = free earlobes, e = attached earlobes, d = dark hair, d = light hair). e is dominant, e is recessive. d is dominant, d is recessive. what genotypes and phenotypes can their offspring have and what is the probability of each genotype and phenotype?
The genotypes and phenotypes their offsprings can have include only free lobes and attached hair.
What is Genotype?This is defined as the genetic constituent of an organism while phenotype represents the physical characteristics.
Dd and Ee when crossed will give DE, De, dE and de which means that the genotype will be 1 homozygous dominant,2 heterozygous and 1 homozygous recessive for free lobes and attached hair.
The probability = number of favorable outcome/ total number of outcome.
The total number of outcome = 4
The probability for 1 homozygous dominant,2 heterozygous and 1 homozygous recessive is therefore 1/4 , 1/2 and 1/4 respectively.
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Viruses attack and destroy which of the following
(A) cells
(B) mutations
(C) vaccines
(D) pasteurization
Answer:
Cells
Explanation:
Viruses attack the body's cells in order to weaken the body ._.
A sequence of three nitrogenous bases in a messenger-rna molecule is known as a.
Answer:
A sequence of three nitrogenous bases in a messenger-rna molecule is known as Codon
Explanation:
Codon is a triplet of three nitrogenous bases present in mRNA. It can be any three from uracil, adenine, guanine or cytosine. They are arranged in specific order and code for specific amino acids.
Which organ is primarily responsible
for absorbing nutrients from food?
A. mouth
B. heart
C. lungs
D. small intestine
Answer:
D
Explanation:
Nocardia are of particular interest to scientists for the process of bioremediation because they can degrade _________. (Check all that apply.)
Nocardia is important in bioremediation process because they can decompose polycyclic aromatic hydrocarbons, polychlorinated biphenyls, chlorophenols, sulfonated azo dyes and alkanes.
What is bioremediation?Bioremediation is the process of using living organisms such as microorganisms to degrade wastes in the environment in order to return it to its previous healthy state.
An example of a microorganism used in bioremediation is Nocardia spp.
Nocardia is important in bioremediation because they can decompose polycyclic aromatic hydrocarbons, polychlorinated biphenyls, chlorophenols, sulfonated azo dyes and alkanes.
Based on the complete question which is given as follows:
"Nocardia are of particular interest to scientists for the process of bioremediation because they can degrade _________. (Check all that apply) A. petroleum Hydrocarbons B. rence benzone C. pectin Keratin D. Decode Chiron", the correct options are A and B.
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What 2 chemicals is the contents of the stomach composed of
Answer:
digestive enzymes, hydrochloric acid
Explanation:
Gastric juice is made up of digestive enzymes, hydrochloric acid and other substances that are important for absorbing nutrients – about 3 to 4 liters of gastric juice are produced per day. The hydrochloric acid in the gastric juice breaks down the food and the digestive enzymes split up the proteins
Changes in ecosystems can be attributed to natural causes, such as natural disasters, seasonal variations in climate, currents, and tidal activity. Many of these changes can affect the amount of food resources available in an ecosystem. Research one natural change that currently affects or could affect the aquatic ecosystem you chose. Use your food web model to explain how this change can affect the competition of food resources in your aquatic ecosystem.
The reduction of food sources results in the competition of food resources in the aquatic ecosystem.
How natural disaster can leads to the competition?Severe storm occurs in the water which adversely affected the aquatic ecosystem. This change can affect the competition of food resources in your aquatic ecosystem because the food on which the aquatic animals feed is destroyed by the storm. So less food is available for the organisms which leads to competition between organisms.
So we can conclude that the reduction of food sources results in the competition of food resources in the aquatic ecosystem.
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How does global climate change impact coral growth? (4 points)
Global climate change does not impact coral growth.
Climate change decreases the overall temperature of the ocean, preventing coral growth due to the lack of acidic waters.
Greenhouse gases trap solar radiation, which decreases the temperature of the ocean, causing algae to bloom and prevent coral growth.
Greenhouse gases trap solar radiation, which raises the temperature of the oceans, preventing algae growth that is needed for coral growth.
Climate change impacts coral growth through a rise in the temperature of the oceans which limits the growth of algae.
Climate change and coralsClimate change is brought about by a rise in the global temperature as a result of an increase in the concentration of greenhouse gases. The gases trap reflected solar radiation and cause an increase in the temperature of the globe.
An increase in the temperature of the globe also causes an increase in the temperature of the various oceans of the world. Thus, the growth of algae which are the major components of coral reefs is impacted negatively.
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In multicellular organisms, different structures have different functions. Which function is carried out in the leaves of a plant?.
Answer:
The leaves of a plant absorb light
what type of disorder is sickle cell anemia
It's an "Inherited Blood disorder"
Explanation:
what is "Sickle cell anaemia"?
A group of disorders that cause red blood cells to become misshapen and break down.
With sickle cell disease, an inherited group of disorders, red blood cells contort into a sickle shape.
Sickle cell disease is caused by inheriting the sickle cell gene.
The sickle cells die early, which causes a constant shortage of red blood cells. Also, when they travel through small blood vessels, they get stuck and clog the blood flow. This can cause pain and other serious problems such infection, acute chest syndrome and stroke.
Explanation in brief:
Anemia has three main causes:
blood loss, lack of red blood cell production, and high rates of red blood cell destruction.
Measurements of the blood of a marathon runner during a marathon race do not show a similar rise in lactic acid levels. Explain fully why this is the case.
Blood measurements of a marathon runner during a marathon race do not show a similar rise in lactic acid levels because he undergoes mostly aerobic respiration.
What are aerobic and anaerobic respiration?Aerobic respiration is respiration which occurs in the presence of oxygen.
Anaerobic respiration is a respiration which occurs in the absence of oxygen
During aerobic respiration in humans, the end-product is acetylcoA while in anaerobic respiration, the end product is lactic acid.
A sprinter undergoes mostly anaerobic respiration and produces lactic acid, while a marathon runner undergoes mostly aerobic respiration and produces less lactic acid.
Therefore, blood measurements of a marathon runner during a marathon race do not show a similar rise in lactic acid levels because he undergoes mostly aerobic respiration.
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Which theorist believed that the unconscious rises to the surface through dreams?
Many of our sensations, aspirations, and emotions, as per Freud, are suppressed or held out of consciousness because they are just too scary.
What are dreams?A dream is a stream of pictures, ideas, emotions, and pleasures that occur automatically in the mind during various phases of sleep.
Freud felt that these latent wants and wishes may potentially be revealed through dreams and slips of the tongue.
Many of our sensations, aspirations, and emotions, as per Freud, are suppressed or held out of consciousness because they are just too scary.
Thus, the theorist who believed the unconscious rises to the surface through dreams is Freud.
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In order to prevent pest infestations it is important to.
Answer: Take out the trash regularly, make sure food is stored in secure containers, clean the house regularly, and don't leave perishable foods out for a long time.
Pest infestations is the infiltration of pests on an area which can be prevented by taking some measures such as taking out of the trash, cleaning of the area regularly with disinfectants, storing the food in a closed and secured place, etc.
What is Pest infestation?
The pest infestation can be defined as the situation when a species which is considered as a 'pest' infiltrates a location or an area, either alone or in a group. This can affect the environment nearby, and the environment itself, and results into an increased risk of health-related problems or damage.
The pest infestation can be prevented by taking out the trash regularly from the containers, making sure that the food is stored in secured containers, regular cleaning of the house, and also not leaving behind the perishable foods in open for a long time.
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What claims, language and message could unlock star potential for our strong, effective portfolio of topical pain reliever s?
Connecting with the consumer in a meaningful way with the unique benefits being included will unlock star potential of the pain reliever.
What is Message?These consists of means of passing information about an individual or a substance.
Tropical pain reliever should have the unique benefits passed to ensure increase in sales and profit.
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Which part of the plasma membrane helps cells recognize each other as
well as enable
fluids/chemicals/etc.
into and out of the cell?
O Integral Proteins
O Carbohydrates
O Peripheral Proteins
O Phospholipid Bilayer
Answer:
Phospholipid Bilayer
Explanation:
i helped my friend with her test and that was the answer
Use the drop-down menus to identify the type of energy each phrase describes.
The shortest wavelength of visible light
Energy that can be felt as heat but not seen
Short, invisible rays that can cause eye damage
Visible light with the longest wavelength
Each sentence describes a different form of energy:
The shortest wavelength of visible light is violet light.Energy that can be felt as heat but not seen is infrared radiations.Short, invisible rays that can cause eye damage is ultraviolet radiations.Visible light with the longest wavelength is red light.Define electromagnetic spectrum?An electromagnetic spectrum is a set of frequencies and wavelengths over which an electromagnetic wave can be spread (extends).
From smallest to longest wavelength (highest to lowest frequency), the electromagnetic spectrum consists of the following types of energy:
Gamma raysX-raysUltraviolet radiationVisible lightInfrared radiationMicrowavesRadio wavesType of energy:
Each phrase in science describes a different form of energy:
1. Violet light has the shortest wavelength of visible light.
Visible light has a wavelength of 380 to 450 nanometers.
2. Infrared radiations are energy that can be felt as heat but cannot be seen.
Infrared radiation is a form of energy that the human body perceives as heat but that cannot be seen since it is outside the visible light range.
3. Ultraviolet radiations are short, invisible rays that might cause eye injury.
Ultraviolet light, which is mostly produced by the Sun, has the potential to harm the eyes.
4. Red light is the visible light with the longest wavelength.
Red light has a wavelength of 620 to 750 nanometers.
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Answer:
1.D
2.B
3.C
4.A
Explanation:
What structural adaptations does a rhino have and how do those adaptations enable it to survive?
Answer:
Black rhinos have a number of adaptations that help them survive in their environment, including an upper lip that is prehensile, which means the rhino can use it almost like a hand and which sets them apart from white rhinos. They also have thick skin and can rotate their ears.
Explanation:
correct me if I'm wrong because i work hard for this question
Although the integument is a covering, it is by no means simple, and some of its functions include Group of answer choices epidermal blood vessels serving as a blood reservoir. the dermis providing the major mechanical barrier to chemicals, water and other external substances resident macrophage-like cells whose function is to ingest foreign invaders and present them to the immune system cooling the body by increasing the action of sebaceous glands during high temperature conditions
The functions of the integument include resident macrophage-like cells that ingest foreign invaders and present them to the immune system.
What is the integumentary system?The integumentary system is a physical barrier that separates the body from the external environment.
This barrier (integumentary system) is fundamental for the immune system due to the presence of macrophage-like cells.
In conclusion, the functions of the integument include resident macrophage-like cells that ingest foreign invaders and present them to the immune system.
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Answer:
Explanation:
The frequency of a certain trait in a population of beetles will increase over time if -
there is variation in that trait within the population.
beetles possessing the trait produce more offspring
the trait is not linked to the genetic makeup of the beetle.
it creates a specialization to a specific food source.
Answer:
this question is asking what an adaptation is or what an adaptive trait is.
Explanation:it has been hypothesized that sympatric speciation of pine beetles may occur through the isolation of populations as a result of increasing dietary ...
Identify the stomata components.
a. _________
b. _________
The stomata components also include a) subsidiary cells, which are specialized cells surrounding the ,b) guard cells that assist in the opening and closing of the stomatal pore.
What are the types of stomata ?1. Based on structure:
• Anomocytic stomata: with no surrounding specialized cells
• Paracytic stomata: with one or more subsidiary cells parallel to the guard cells
• Diacytic stomata: with two subsidiary cells at right angles to the guard cells
• Cyclocytic stomata: with one or more subsidiary cells encircling the guard cells
2. Based on location:
• Hypostomatic stomata: present only on the lower epidermis
• Epistomatic stomata: present only on the upper epidermis
• Amphistomatic stomata: present on both the upper and lower epidermis.
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Why are certain traits adaptations in one environment, but not in another?
A. Some environments cause more mutation than others.
B. Different environments have different abiotic conditions.
C. All environments have the same amount of competition.
D. Organisms can learn new adaptations.
Answer:
B. Different environments have different abiotic conditions.Explanation:
Different circumstances cause different outcomes, animals adapt to certain conditions and their surroundings.
Letter C isn't incorrect but that is not what the question is asking C.Organisms can learn new adaptations.
but other than those two the rest are incorrect.
Name the organs which form a part of our respiratory system.