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antoniya [11.8K]
3 years ago
14

Long polymers are made from single subunits in cells using a ___________ reaction, which ___________ water.

Biology
1 answer:
Lera25 [3.4K]3 years ago
5 0

Answer:

a) Dehydration

b) water (H2O)

Explanation:

Polymers are large complex substances that arise from the joining of smaller simpler units called Monomers. A monomer is joined together by a covalent bond, to form a polymer molecule. However, this process usually accompanies the loss of a water molecule due to the hydrogen (H+) and hydroxyll (OH-) ions that is contributed by each monomer unit. Hence, this process is called a DEHYDRATION REACTION.

For example, glucose moleculea as monomer units combine together in a dehydration reaction to form larger polymers such as starch, glucose etc.

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The NADPH generated by the pentose phosphate pathway primarily serves as a
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Answer:

Option-A

Explanation:

Pentose phosphate pathway is the alternative pathway taking place in both eukaryotes and prokaryotes parallel to the glycolysis.

The pentose phosphate pathway forms the electron carriers called NADPH and the ribose-5 phosphate.

The NADPH is formed in large amounts through this pathway which contains a very high amount of energy. NADPH can donate its hydride ions, therefore, it can be involved in the reaction where it can donate energy in the form of hydrogen and electron.

The NADPH is therefore involved in the formation of reducing biosynthetic pathways like fatty acid synthesis, cholesterol synthesis, and bile acid synthesis.

Thus, Option-A is the correct answer.

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Over time, which cell will look the smallest?
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The correct answer is: E) cleavage furrow formation and cytokinesis

Cytochalasin B (cytos-cell and chalasis-relaxation) is a molecule which inhibit network formation by actin filaments by blocking monomer addition. As a result, itshortens actin filaments. This molecule is involved in cytoplasmic division where it blocks the formation of contractile microfilaments. One of the microfilament’s function includes cytokinesis and formation of cleavage furrow so these functions are affected by cytochalasin B.


7 0
3 years ago
In which situation would all of the larger elephants in a herd most likely stand shoulder-to-shoulder around a young calf? to pr
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3 years ago
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