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Ipatiy [6.2K]
3 years ago
15

Which of the following is formed by intramembranous ossification?

Biology
1 answer:
BartSMP [9]3 years ago
4 0

Answer:

E

Explanation:

Intramembranous ossification is a process whereby bone is formed from fibrous membranes as opposed to endochondral ossification, in which bone is formed from cartilages.

During intramembranous ossification, mesenchymal cells (multipotent stem cells) differentiates into osteoblasts which then calcifies to become bone, a process called ossification.

The initial formation of the roof of our skulls can be ascribed to intramembranous ossification and also the jaw and clavicle

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In what ways are cellulose and starch similar to each other and in what ways are they different? Be specific in your comparison,
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By starch, I'm assuming you mean glycogen, or animal starch.
Similarities:
Both are polysaccharide molecules made from glucose molecules linked together in a long chain.
Both are storehouses of energy.

Differences:
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Cellulose is made in plant cells.

The bonds are a bit different; the molecules are isomers. Glycogen bonds with what is called an alpha 1,4 bond, meaning that the first carbon of one glucose molecule is bonded to the 4th carbon of the next glucose molecule, but in a way that puts the bonds in a shape that falls below the plane of the molecule, and allows branching.

Cellulose bonds with beta 1,4 bonds. The first and fourth carbons of adjoining glucose molecules are still connected, but the shape of the bond falls above the plane of the molecule and does not branch.

Since enzymes are specific to their substrates, the enzymes shaped to fit glycogen bonds do not fit on cellulose bonds, which is why animals cannot digest cellulose on their own. In herbivores, there are microbes in their digestive tracts which can produce enzymes to break these bonds so the glucose can be used. In carnivores and omnivores like humans, there is no enzyme to break down cellulose so it becomes 'roughage' in our diets. It passes through the digestive tract without being broken down.
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3 years ago
10 pointsSIENCE
lawyer [7]

Answer:

<h2>c. glucose</h2>

Explanation:

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Which of the following is a clue that a chemical change has taken place?
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Answer:

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Explanation:

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Answer:

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Explanation:

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