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kipiarov [429]
3 years ago
12

What is the significance of chitin in arthropods? A. Chitin is a storage carbohydrate that forms their exoskeleton. B. Chitin is

a structural carbohydrate that forms their exoskeleton. C. Chitin is a protein that forms their exoskeleton.
Biology
1 answer:
Kay [80]3 years ago
6 0
C is the answer I believe
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During aerobic cellular respiration, one molecule of glucose is used to produce how many ATP molecules?
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For the first question, I believe it's 36. For the second question, it is oxygen, as oxygen is essential for aerobic processes. For the last question, the summarized cellular respiration equation is the 2nd one.
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<h2>❣️(◍Jess bregoli◍)❣️</h2>

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How does surface-to-volume ratio relate to the size of a cell
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5 0
3 years ago
Science Question 3, Thanks if u help!
noname [10]

Answer:

The correct statement is option C. Mitosis produces cells which are identical to parent cell, while meiosis produces cells that carry half of the genetic material of the parent cell.

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4 0
3 years ago
Because of the presence of both activation and inactivation gates, voltage-gated Na channels can A. be activated B. all of these
gladu [14]

Because of the presence of both activation and inactivation gates, voltage-gated Na channels can be all of these.

  • Sodium voltage-gated channels can be either closed, open, or inactive.
  • Voltage-gated sodium channels are closed when at rest. Both an activation gate and an inactivation gate are present in voltage-gated sodium channels.
  • Although the inactivation gate is open, the activation gate is closed. This conformation is closed but capable of opening. Some of the activation gates open as a result of membrane depolarization brought on by a stimulus.
  • Both the activation and inactivation gates will be opened at this point. As sodium ions enter the cells, nearby activation gates will open.
  • A greater amount of sodium will enter the cells as a result, initiating an action potential.
  • Both gates open when certain depolarization thresholds are reached. Action potential increases to its maximum as sodium rushes into the cell.
  • The inactivation gate will gradually close and the permeability of the membrane to sodium ions will decrease. The channel is now in a state known as "closed but not capable of opening."
  • Up until the membrane potential reaches its resting state, this occurs. The channels once more assume the "closed but capable of opening" conformation when resting values are attained.

learn more about  Na channels here: brainly.com/question/12977601

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7 0
1 year ago
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