Glucose provides energy for cells. Different cells have different mechanisms for glucose intake. Intestinal cells contain proteins that transport glucose against its concentration gradient. These proteins couple the movement of glucose to the movement of sodium down its concentration gradient. Red blood cells have transporter proteins embedded in their membranes. When bound by a glucose molecule, these proteins change shape and allow glucose to move down its concentration gradient into the cell.

Based on this information, what type of transport is used for glucose in blood and intestinal cells?

A.
Blood cells take in glucose by active transport and intestinal cells take in glucose by passive transport.
B.
Both blood and intestinal cells take in glucose by active transport.
C.
Both blood and intestinal cells take in glucose by passive transport.
D.
Blood cells take in glucose by passive transport and intestinal cells take in glucose by active transport.

Question

emmaackerman2003 emmaackerman2003

31-05-2019
Biology

contestada

Glucose provides energy for cells. Different cells have different mechanisms for glucose intake. Intestinal cells contain proteins that transport glucose against its concentration gradient. These proteins couple the movement of glucose to the movement of sodium down its concentration gradient. Red blood cells have transporter proteins embedded in their membranes. When bound by a glucose molecule, these proteins change shape and allow glucose to move down its concentration gradient into the cell.

Based on this information, what type of transport is used for glucose in blood and intestinal cells?

A.
Blood cells take in glucose by active transport and intestinal cells take in glucose by passive transport.
B.
Both blood and intestinal cells take in glucose by active transport.
C.
Both blood and intestinal cells take in glucose by passive transport.
D.
Blood cells take in glucose by passive transport and intestinal cells take in glucose by active transport.

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yuhonglee0202 yuhonglee0202 · Answer 1 · 2019-05-31T18:08:06+02:00

Answer:

D

Explanation:

Intestinal cell takes in glucose against Concentration gradient (uses energy in the form of ATP) to transport glucose into cell.

In blood cell, uptake of glucose occurs down concentration gradient. Hence, its facilitated diffusion (passive transport)

Glucose is a polar molecules due to presence of polar hydrophilic - OH group, hence carrier proteins are needed to provide a hydrophilic channel for glucose to enter the cell via facilitated diffusion.