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Author Question: Sodium ions are reabsorbed into the body by the aid of what catalyst? A) Aldosterone B) Sodium ... (Read 96 times)

kodithompson

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on: Jul 23, 2018
Sodium ions are reabsorbed into the body by the aid of what catalyst?
 
  A) Aldosterone
  B) Sodium bicarbonate
  C) Angiotensin
  D) Carbonic anhydrase

Question 2

Much of the sodium in the filtrate is reabsorbed in the proximal convoluted tubule to the peritubular capillaries. As the sodium is moved out of the filtrate, what does it take with it?
 
  A) Calcium
  B) Magnesium
  C) Chloride ions
  D) Potassium ions


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amandalm

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Reply #1 on: Jul 23, 2018
Answer to Question 1

D
Feedback:
Carbonic anhydrase, an enzyme, speeds the process of carbon dioxide and water combining to form carbonic acid. The carbonic acid immediately dissociates to form sodium bicarbonate, using a sodium ion from the renal tubule and a free hydrogen ion (an acid). The other options are not correct.

Answer to Question 2

C
Feedback:
As sodium is actively moved out of the filtrate, it takes chloride ions and water with it. Sodium does not take calcium, magnesium, or potassium ions with it.


kodithompson

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Reply 2 on: Jul 23, 2018
YES! Correct, THANKS for helping me on my review

sultana.d

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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