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jok3333 [9.3K]
3 years ago
8

A, B, AB, and O blood groups are distinguished by:

Biology
1 answer:
notka56 [123]3 years ago
8 0
They are distinguished by proteins on the erythrocytes.
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What two substances are the ingredients of cellular respiration and the products of photosynthesis?
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Answer: Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.

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Down's Syndrome is also called Trisomy 21 because affected people have three copies of chromosome 21. How is this possible?
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Explanation:

About 95 percent of the time, Down syndrome is caused by trisomy 21 — the person has three copies of chromosome 21, instead of the usual two copies, in all cells. This is caused by abnormal cell division during the development of the sperm cell or the egg cell.

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3 years ago
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Which of the following correctly compares how plant and animal cells differ?<br> (4 points)
a_sh-v [17]

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Explanation:

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3 years ago
The Earth is more massive than the moon. How will a person’s weight on the moon compare to their weight on Earth?
Rom4ik [11]

Answer:

The weight of a person on the moon is less, compared to their weight on Earth.

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Gravitation is a force. Gravity is the force that tries to pull two objects toward each other.

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The Gravitational pull is difined by the force that arises of masses of two objects in relation to their distance.

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