Cellular Interactions with the Environment

Question 1

Complete the statement to describe the calcium concentration that must be maintained in human body cells. The calcium concentration must be greater the cell than ⇒ inside the cell.

Revolt · Accepted Answer

Part 1: outside; ⇒ inside: 122880

Question 2

Question 2

Revolt · Accepted Answer

A: out of

Question 3

Question 3

Revolt · Accepted Answer

B,E

Question 4

Complete the statement to describe the sodium-potassium pump. The sodium-potassium pump moves ⇒ potassium ions into the cell and ⇒ sodium ions out of the cell.

Revolt · Accepted Answer

⇒ potassium: 122883; ⇒ sodium: 122884

Question 5

Question 5

Revolt · Accepted Answer

B

Question 6

Which statement describes a similarity between the calcium pump and the sodium-potassium pump?

Revolt · Accepted Answer

D: Both pumps use proteins to transport substances across the cell membrane.

Question 7

Why do pumps require energy?

Revolt · Accepted Answer

B: Pumps move substances from areas of low concentration to areas of high concentration.

Question 8

Question 8

Revolt · Accepted Answer

122880

Question 9

Question 9

Revolt · Accepted Answer

122884

Cellular Interactions with the Environment Answers

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