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Effectus [21]
2 years ago
15

Explain how the human immune system responds to a viral infection.

Biology
1 answer:
nikdorinn [45]2 years ago
8 0
Infected cells create and release small proteins known as interferons, which help the immune system fight viruses. Interferons stop viruses from replicating by interfering with their ability to multiply within infected cells.
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How does waste removal in a fetus differ from waste removal after birth?
Eddi Din [679]

Answer: A) Fetal waste is removed through the chorion; infant waste is removed through the rectum.

Explanation:

A developing fetus is surrounded by chorion which is an outer membrane. The role of the chorion is to protect the embryo and provide nutrition to it in the form of blood supply. It helps in getting rid of waste products from the developing fetus that goes into the mother blood to remove out of her body. In case of infants the rectum is the last part of the digestive tract and it receives the waste in the form of fecal matter from small intestine which is removed out through the rectum.

6 0
3 years ago
Bony Fish (bass etc.) and marine mammals (like dolphins) evolved some similar adaptations for survival in aquatic environments.
xeze [42]

Answer:

Convergent evolution

Explanation:

Convergent evolution is a type of evolution of similar features and/or structures between organisms that are not phylogenetically related. This type of evolution is known to create analogous structures/organs that exhibit similar or the same functions but were not present in the last common ancestor of these taxa. An example of analogous structures (and therefore also of convergent evolution) are the wings of bats and of insects (e.g., butterflies). Conversely, divergent evolution is a type of evolution where species phylogenetically related, i.e., species that share a common ancestor, evolve and accumulate differences over time.

6 0
3 years ago
What is the change of an objects velocity called? the answer has 12 letters.
Fudgin [204]
The change in an object's velocity, whether speed or direction, is known as acceleration.
6 0
3 years ago
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What are the pigments in cyanobacteria used for?
Phantasy [73]

Answer:

Pigments are useful to plants and other autotrophs

Explanation:

Not sure, but hope this helped a bit

3 0
3 years ago
How many chromosomes does a human body have?
Novay_Z [31]
<span>Humans have 23 Chromosomes </span>
8 0
3 years ago
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