Answer:
Helper T-cells stimulate B-cells to make antibodies and help killer cells develop. Killer T-cells directly kill cells that have already been infected by a foreign invader.
Explanation:
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name a fat soluble vitamin manufactured by the human body
What is the purpose of the proper handling of experimental subjects?
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1: Explain why cellular respiration releases energy as an overall chemical reaction.
2:Explain why the amount of biomass and stored energy is lower at high trophic levels than it is at low trophic levels
Cellular respiration is the metabolic reaction inside the cell to convert chemical energy into ATP. Biomass is the total mass of organisms at a trophic level.
What is exothermic reaction?The type of reaction in which releases energy after its completion.
Cellular respiration releases energy because it is an exothermic process in which energy is released as a by-product of the reaction.Organisms are larger in size at higher trophic levels, but their smaller numbers result in less biomass.Thus, being exothermic in nature, cellular respiration releases energy and because of less numbers, there is less biomass at high trophic levels.
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In the model of energy flow from autotrophs to heterotrophs, the interaction of matter and energy at different levels of the food
web is shown. Which statement accurately describes the energy transfer, the process involved, and the products formed based on
the model?
Answer:
B. Photosynthesis, indicated by the red arrows, uses energy stored in organic molecules to form ATP, which releases carbon dioxide and water.
Explanation
Photosynthesis use sunlight to synthesize foods from carbon dioxide and water.
Which of the following is NOT one of the
four main types of tissues?
A. lung tissue
B. epithelial tissue
C. connective tissue
Answer:
B
Explanation:
It's complexity are unrelated
Answer:
Lung Tissue
Explanation:
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In a population of short, ground-dwelling animals, some offspring were produced that were approximately 1 cm taller than others in the population. This group was able to reach slightly higher vegetation than the rest of the population. When these animals grew up, they were able to produce more offspring than other animals in the population. This pattern, where the tallest animals were more likely to survive and reproduce, continued over several generations. Eventually, after many generations, all members of the population were at least 20 cm taller than animals of the original population had been. What does this illustrate?
A. Biological change does not apply to ground-dwelling animals. B. Slight differences between parents and offspring can eventually result in future generations that are very different from their ancestors. C. Only major differences between parents and offspring can result in future generations that are very different from their ancestors. D. Ground-dwelling animals would survive better if they evolve to be shorter.
Answer:
B. Slight differences between parents and offspring can eventually result in future generations that are very different from their ancestors.
Explanation:
Seemingly minor mutations that increase a species' ability to survive will likely be spread over many generations, and can eventually cause major differences between generations.
why it unsparing that coral bleaching can occur with water as well as warm
Answer:
Warmer water temperatures can result in coral bleaching. When water is too warm, corals will expel the algae (zooxanthellae) living in their tissues causing the coral to turn completely white. This is called coral bleaching.
Explanation:
What would happen to our calendar of Earth revolves around the Sun about every 365 1/4 days?
Answer:
The Earth orbits the sun every 365.2422 days (0.2422 days is equal to 5 hours, 48 minutes and 46 seconds, roughly 1/4 of a day). Every 365 1/4 days (not exactly 365 days), the Earth returns to the same exact spot in its orbit.
Which of the following living reptiles care for their young and have a four-chambered heart, as birds do?
a. Turtles
b. Crocodiles
c. Lizards
d. Snakes
e. Tuataras
A student proposes that left-handedness is a recessive trait and is hidden in much of the human population. a survey of his class of 36 students finds that 9 students are left-handed. using the hardy-weinberg formula, what would be the expected allelic and genotypic frequencies in this theoretical population
The frequency of the recessive allele for the left handle will be in this case equal to q^2 = 0.25 >> q = 0.5.
What is the Hardy Weinberg principle?The Hardy Weinberg principle is a model used in population genetics to estimate genotypic and allele frequencies.
The Hardy Weinberg principle states that the sum of the dominant allele and the recessive allele in a population is equal to 1 (p + q = 1).
This principle also states p2 + q2 + 2pq = 1, where p^2 is the dominant homo-zygous allele, 2pq the heterozygous frequency and q^2 the recessive homo-zygous frequency.
In this case, 9 individuals represent 25% (q^2 = 0.25), thereby the feecuency of q is equal to √0.25 = 0.5.
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Answer:
ummm...... the parents have horns but one of there kids won't have horns.
umm...i don't know about the rest i'm so sorry.
hello guys
i have a trivia about the bermuda triangle
who ever answer it first right ill make it brainliest
questions:
1.Name the first man who discover bermuda
2.What year did he discover it
3.did he came back safely?
Christopher Columbus was the earliest to have noticed the bermuda Triangle
1492
Yes he did as he wasn't aiming to visit the bermuda triangle.
help please:) biology
An danger
Explanation:
i did it and got it right
help me please with this question, also explanation
Answer:
okay so the answer is C this is because the triplet found on tRNA is anticodons not codons. please. rate. me. brainliest
During which life stage does a caterpillar create its chrysalis?.
Answer:
Pupa stage
Explanation:
When it has eaten enough, it will start to make its chrysalis It would hang on a branch that would Be suitable But the character is still alive eventually after a long time in there, it'll soon mutate into a butterfly, and it'll still be alive And then it'll Eggs Starting over again.
Some snail species' shells can have right-handed direction of shell coiling or left-handed direction of shell coiling. The direction of coiling depends on a protein deposited by the mother in the egg cytoplasm with DD and Dd mothers depositing a protein that directs right-handed direction of coiling in shells. If Dd egg-producing snail and a dd sperm-producing snail mate what genotype(s) and phenotype(s) of offspring will result
The cross between Dd egg-snail and a dd s snail mate will result in snails with genotype 1/2 Dd:1/2 dd and phenotype all right-coiling.
What is a genotype?The genotype refers to the allele combinations that can be found for one or more loci in an individual.
The phenotype refers to how the genes and alleles interact to produce a physical trait in an organism.
In this case, one parent can produce two types of gametes (D and d), whereas the other parent can only produce d gametes.
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If flying squirrels were brought to australia, what do you predict would happen?.
Answer:
they would die
Explanation:
they would propadly die because they need big, not too warm forests and that is not in Australia
Recognizing the influence of subjective personal experiences and beliefs is the foundation of the __________ that humanistic theorists use to explain personality. a. behavioral perspective b. person-centered approach c. self-perception theory d. phenomenological approach please select the best answer from the choices provided a b c d
Humanistic psychologists allows growth by creating awareness and self-understanding. The influence of subjective personal experiences and beliefs is the base of the phenomenological approach.
What is phenomenological approach?
The phenomenological approach is a qualitative inquiry that focuses on experiential, lived aspects of a particular construct.
This method describes meanings of experiences of human life. It focuses on research questions such as the feeling during the experience a particular situation.
The influence of subjective personal experiences and beliefs is the base of the phenomenological approach that is used by humanistic theorists to explain personality.
Thus, the correct option is D.
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b. How many producers and consumers are in this food web? (1 point)
Answer:
2 producers, 5 consumers.
Explanation:
Producers make their own energy, while consumers consume energy from others in the food chain.
What principle enables this movement process of gases in and out of the respiratory system?
the diagram shows a beaker of water and molecules of red dye at the beginning of an experiment (time 1) and the same beaker of water and molecules of red dye after 30 minutes (time 2) which of the following best explains what happened?
a- molecules of red dye moved by diffusion from a higher concentration to a lower concentration
b- molecules of red dye moved by active transport from a higher concentration to a lower concentration
c- molecules of water moved by osmosis from a higher concentration to a lower concentration
d- molecules of water moved by active transport from a higher concentration to a lower concentration
Answer:
The answer is A. I seen it on Quiziz.
Explanation:
The diagram shows that the molecules of red dye moved by diffusion from a higher concentration to a lower concentration in a beaker of water.
What is diffusion?"It is a phenomenon in which a solute moves from its region of higher concentration to a region of lower concentration."It works towards the concentration gradient."Concentration gradient means difference in the amount of solute present in two areas."What do you mean by concentration?"The amount of solute present in a mixture is called concentration."When a dye is put in a beaker of water, it gets evenly distributed through diffusion.
Hence, the correct option is a. molecules of red dye moved by diffusion from a higher concentration to a lower concentration.
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Rabbits were introduced to Australia in the 1800s and spread quickly across
the continent, moving into the nests of native burrowing animals and eating
their food. What allowed the nonnative rabbits to spread so quickly in
Australia?
A. The rabbits had no tolerance for the niches in Australia.
B. The rabbits were able to live in niches that Australian animals
could not live in.
C. The rabbits had a high tolerance for the abiotic factors in
Australia.
D. The rabbits were smarter than the Australian predators.
The answer is C ( ◠‿◠ )
Why is genetic variation important for the long term survival of a population?
Explanation:
According to Darwinism , the survival of the fittest , variation is important because it allows species to adapt to its environment , the stronger in traits is selected and the weakest is unable to adapt and die.
so , variation is the only way for a species to acquire new traits that can enable them to survive and adapt to their surroundings, Normally , Variation is very slow and it requires many generations for new traits to emerge , but it happens.
can anyone help me with this? thank you if you do!
Answer:
I think the answer is B they all reflect light rays to form an image
Answer:
B
Explanation:
All mirrors reflect light rays, resulting in a "mirror" image. Concave mirrors reflect the rays so they converge, while convex mirrors reflect light so they diverge. This results in the different images that are seen in these types of mirrors.
What is your opinion about fracking? State your opinion and give reasons to support it. Answers must be at least three sentences. NO LINKS
Fracking process is dangerous and hazardous for all our environment and its organisms.
What is your opinion about fracking?Hydraulic fracturing is a type of oil and gas drilling that occurs across the country. Due to no safety regulations, it can polluted groundwater, pollute surface water, and harm wildlife.
So we can conclude that fracking process is dangerous and hazardous for all our environment and its organisms.
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Mammals that live in the Arctic Ocean have a large amount of blubber, which is a fatty tissue just beneath the skin.
Which statement best relates why these animals have so much blubber?
Lipids in blubber insulate the animals from cold water.
Proteins in blubber help the animals move to stay warm.
Carbohydrates in blubber provide all the energy that the animals need to stay warm.
Nucleic acids help build the lipids in blubber, which keep animals warm by regulating cell activities
Answer:
Mammals that live in the Arctic Ocean have a large amount of blubber, which is a fatty tissue just beneath the skin. Which statement best relates to why these animals have so much blubber? Lipids in blubber insulate the animals from cold water.
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Why can't you see the orbits of Earth, Mercury, Venus, and Mars in the diagram of the solar
system?
Answer:
please provide a diagram
Explanation:
No matter which biome we examine ____ are the group of organisms that forms the nonmobile base for the biome's food web
A) animals
B) bacteria
C) plants
D) soil
Suppose the climate in a specific location becomes warmer. What are two things that might happen to a mammal species with a thick fur coat that lives in this location?
The two things that might happen to a mammal species with a thick fur coat that lives in this location are migration and change in their surroundings.
How do the birds and animals respond to the call of winter?By moving from cold areas to warmer ones, animals are able to find food origins that are otherwise elusive during the winter months.
Birds migrate, but some mammals do, too - bats, elk, caribou and even some whales follow the weather to find warm winter quarters.
Thus, The two things that might happen to a mammal species with a thick fur coat that lives in this location are migration and change in their surroundings.
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What is an advantage of flowering plants.
Answer:
Flowering plants are very important for the ecosystem and the humans.
Explanation:
Flowering plants are plants that bear flowers and fruits. They are necessary in order for the plant to produce seeds and allow seeds to exist generation after generation. They also help different insects and plants for pollination.