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uysha [10]
3 years ago
15

Some one plz help asap

Biology
1 answer:
Lilit [14]3 years ago
3 0

Answer:

Explanation:

The earth turns on its axis every day; it orbits the sun, just like all the other planets in our Solar System. When viewed from space, it turns counter-clockwise.

Because it rotates around the earth at the exact same speed as it rotates around its own axis, so that the same side of the moon is constantly facing the surface of the earth.

Tilt of the earth on its axis is responsible for season formation. The amount of sunlight obtained by various regions on earth surface is regulated by tilt. The places of earth that are facing the Sun and get direct sunlight experiences summers while the others which are facing away from the Sun experience winter season.

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Which molecules of the adaptive defense system provide humoral immunity by circulating freely in the blood and lymph, where they
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Answer:

Adaptive immune defense system consists of lymphocytes like B-lymphocytes and T- lymphocytes. B-lymphocytes provides humoral immunity while T- lymphocytes provide cell-mediated immunity to the body.

99% of lymphocytes circulate freely in the blood and lymph. B lymphocytes differentiate into plasma B cells and B memory cells when interact with antigen presented by T helper cells.  

Then plasma cells secrete antibodies in the circulation which binds to extracellular antigens through antigen-binding site. Then the bounded antigen is recognized by receptors present on phagocytic cells. This receptor binds the Fc region of antigen bounded antibody and destroy the antigen by phagocytosis.

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3 years ago
DNA replication occurs during which phase of the eukaryotic cell cycle?
wariber [46]

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I really hope this helps!

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3 years ago
Assume that you are a marine biologist. Choose a marine phyletic group and write a report on its diversity and the adaptations
Maslowich

Answer:

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For stars in the main sequence, which color of stars tend to have higher absolute brightness? (2 points)
raketka [301]

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Blue Stars

Explanation:

Hope this helps :)

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Answer: Respiration in Animals.

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