2 Points

Biology

2 answers:

nydimaria [60]3 years ago

6 0

Answer:

I believe your answer is B

alexdok [17]3 years ago

3 0

Answer:

It's actually D: A covalent bond between 2 atoms where each atom contributes 2 electrons

Explanation:

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Answer:

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3 years ago

How does the structure of the small intestine match its function?

Ostrovityanka [42]

In small intestine millions of micro villi are present for greater absorbption of digested food.

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3 years ago

Why is it thought that the majority of natural selection is stabilizing selection?.

Advocard [28]

Answer:

Why is it thought that the majority of natural selection is stabilizing selection? Mutations produce extreme phenotypes, which are selected for. Artificial selection is the most common, which is a type of stabilizing selection. Most mutations are beneficial and produce intermediate phenotypes.

Explanation:

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2 years ago

What is not an example of a fragmental sedimentary rock?

madam [21]

Hey friend!
Let's figure this out

Fragmental sedimentary rocks include shale, sandstone, conglomerate, salt, breccia, limestone, chert, dolomite, coal, siltstone, and gypsum.

As you can see, Gneiss is not listed among examples of fragmental sedimentary rock. So your answer is B.

Hope this helps!

7 0

3 years ago

4. Which pathway represents the flow of electrons during photosynthesis? (1 point) A.) H2O > Photosystem I > Photosystem I

Yuki888 [10]

Answer:

4. The correct pathway for the flow of electron during photosynthesis is mentioned in option D. $H_{2}O$ > NADP > Calvin cycle.

Electron is first provided to the photo-system II by the phtolysis of water.
Then it is passed to photo-system I with the help of plastoquinone (PQ) and cytochrome $b_{6}f$ .
Finally, electron from the photo-system II is used to reduce NADP to NADPH.
NADPH and ATP are used in light independent phase or Calvin cycle to synthesize carbohydrate from carbon dioxide.

5. The correct answer is B.) photosynthesis.

Photosynthesis is the process by which green plants synthesize glucose or carbohydrate from carbon dioxide and water in presence of sunlight and chlorophyll.
In light independent phase of photosynthesis, it requires ATP and NADPH in order to synthesize food.
Lastly, oxidation or breaking down of glucose releases energy and photosynthesis is a anabolic process instead of catabolic one.

4 0

3 years ago

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