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serg [7]
2 years ago
14

Name the different types of this monomer that make up dna

Biology
1 answer:
djyliett [7]2 years ago
8 0

Adenine

Thymine

Cytosine

Guanine

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In the first step of spermatogenesis, spermatogonia differentiate cells into
mojhsa [17]

Answer:

B. Primary spermatocytes

Explanation:

The germ cell line is a group of cells found inside the seminiferous tubules. This germ cells undergo mitosis (creating spermatogonia) to have a steady supply of cells that will divide by meiosis to produce gametes. When spermatogonia divide by meiosis at the end of meiosis I the newly created cells are known as primary spermatocytes.

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3 years ago
A new life form was discovered on Mars, one based upon Silicon instead of Carbon. Explain what properties Silicon has that allow
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Group IV of the Periodic Table of the Elements contains carbon (C), silicon (Si) and several heavy metals. Carbon, of course, is the building block of life as we know it. So is it possible that a planet exists in some other solar system where silicon substitutes for carbon? Several science fiction stories feature silicon-based life-forms--sentient crystals, gruesome golden grains of sand and even a creature whose spoor or scat was bricks of silica left behind. The novellas are good reading, but there are a few problems with the chemistry.

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CRYSTALLINE CREATURES? Silicon can grow into a number of lifelike structures, but its chemistry makes it unlikely that it could be the basis for alien life-forms.</span>

Indeed, carbon and silicon share many characteristics. Each has a so-called valence of four--meaning that individual atoms make four bonds with other elements in forming chemical compounds. Each element bonds to oxygen. Each forms long chains, called polymers, in which it alternates with oxygen. In the simplest case, carbon yields a polymer called poly-acetal, a plastic used in synthetic fibers and equipment. Silicon yields polymeric silicones, which we use to waterproof cloth or lubricate metal and plastic parts.

3 0
3 years ago
Could anybody help me answer these three bio questions...
muminat

i think it is D. B. AND C. im sorry if im wrong


7 0
3 years ago
Why doesn't an animal cell have a cell wall?
arlik [135]
Only plants need cell walls, animals do not. Cell walls help maintain cell shape in plants, while the cell membrane helps support animal cells.
8 0
3 years ago
Please help pleasssssssseeeeeeeeee.
Liula [17]

Answer:

Serve as a template for the synthesis of strand B

Explanation:

I'm just guessing because looking at the chart only certain things go with the other so it would guide it.

6 0
2 years ago
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