3 years ago

Why do we have 5 fingers not four or six,etc.?

1 answer:

8 0

Answer: The literal reason would be because our ancestors did. The ancestors of all modern mammals had five digits on each limb up to 360 million years ago.

Explanation:

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What is the important of water

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Answer:

Our bodies use water in all the cells, organs, and tissues, to help regulate body temperature and maintain other bodily functions. Because our bodies lose water through breathing, sweating, and digestion, it's crucial to rehydrate and replace water by drinking fluids and eating foods that contain water.

EXPLAINATION:

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3 years ago

Drag each phase of mitosis to the correct description.

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when cells spilt into 2 or more new cells

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What type of interaction is the amino group most likely to be involved in?

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Answer:

H,N-CH-Cho

Explanation:

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2 years ago

One of substances that needed to photosynthesis process is ........................

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A, the answer is oxygen.

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Meselson and Stahl's experiments proved that DNA replicates by which mode?

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Answer:

Semi-conservative

Explanation:

Meselson–Stahl experiment proved that DNA replication is a semiconservative process, feeding E. colo bacteria with different types of Nitrogen isotopes (N14 and N15).

Changing the type of radioactive compound in different times of bacteria grow, they could observe that both of the isotopes were present on the bacteria culture.

Basically, if the bacteria present both of them, the DNA was replicated semiconcervely.

Guess what? they show both! (See the image for more information)

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3 years ago