You place cells in a solution of glucose and measure the rate at which glucose enters the cells. As you increase the concentration of glucose solution, the rate at which glucose enters the cells increases. However when the glucose concentration of the solution is increased above 10M, the rate at which glucose enters no longer increases. Which of the following is the most likely mechanism for glucose transport in the cells?

TRANSPORT IN PLANTS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	Facilitated diffusion via a carrier protein
B	Facilitated diffusion without carrier protein
C	Active transport
D	Symport

Explanation:

Detailed explanation-1: -You place cells in a solution of glucose and measure the rate at which glucose enters the cells. As you increase the concentration of glucose solution, the rate at which glucose enters the cells increases.

Detailed explanation-2: -There is a form of passive transport called facilitated diffusion. It occurs when molecules such as glucose or amino acids move from high concentration to low concentration facilitated by carrier proteins or pores in the membrane.

Detailed explanation-3: -Both blood and intestinal cells take in glucose by passive transport.

Detailed explanation-4: -Glucose is transported across the cell membranes and tissue barriers by a sodium-independent glucose transporter (facilitated transport, GLUT proteins, and SLC2 genes), sodium-dependent glucose symporters (secondary active transport, SGLT proteins, and SLC5 genes), and glucose uniporter-SWEET protein ( SLC50 genes).

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