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Author Question: Why is the mature erythrocyte unable to synthesize proteins or lipids? a. It has no nucleus. b. ... (Read 103 times)

fbq8i

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on: Jun 25, 2018
Why is the mature erythrocyte unable to synthesize proteins or lipids?
 
  a. It has no nucleus.
  b. It has no ribonucleic acid (RNA).
  c. It cannot generate adenosine triphosphate (ATP).
  d. Carrying oxygen interferes with synthesis.

Question 2

Which of the following erythrocyte activities requires energy?
 
  a. Oxygen delivery
  b. Carbon dioxide exchange
  c. Glucose transport into the RBC
  d. Protecting proteins from oxidative damage


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braelync

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Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: A
The mature red cell no longer has a nucleus, mitochondria, and other organelles. It is therefore unable to synthesize proteins or lipids. It also cannot perform oxidative phosphorylation.

Answer to Question 2

ANS: D
Energy is required to protect proteins in the red cell from oxidative damage. This includes hemoglobin and membrane proteins. It is not required for oxygen transport, carbon dioxide exchange, or glucose transport into the cell.


fbq8i

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Reply 2 on: Jun 25, 2018
Great answer, keep it coming :)

Sarahjh

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Reply 3 on: Yesterday
Wow, this really help

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