Question

Glucose is a large molecule that cannot penetrate the phospholipid bilayer of cells. Instead, glucose enters most cells, such as red blood cells, through special carrier proteins embedded in the surface of the plasma membrane. In doing so, glucose moves from an area of high concentration to an area of low concentration. Based on this information, which term best describe the uptake of glucose by red blood cells?

Answer 1

@Ramzy197

Answer 2

its facilitated diffusion

Answer 3

Which statement best describes the difference in how water and glucose can move across a plasma membrane?

Answer 4

have you tried answering them yourself?

Answer 5

yea i have but i go to answer the or yahoo it won't let me go the the webiste

Answer 6

well okie so what are the statements?

Answer 7

do you have any study guides to go bye or notes? Just curious?

Answer 8

Water enters and leaves by osmosis and glucose enters and leaves by simple diffusion.
Both water and glucose enter and leave by active transport.
Water enters and leaves by osmosis, while glucose requires facilitated diffusion or active transport.

Answer 9

its C water enters by osmosis and glucose by facilitated diffusion

Answer 10

Ion Movement Across a Plasma Membrane

Answer 11

The diagram shows sodium ions and potassium ions moving against their concentration gradients to cross the plasma membrane. Which statement best describes how this movement is possible?

Answer 12

a: The ions move across the semipermeable membrane through simple diffusion.
b: ATP provides the energy required to move the ions across the plasma membrane by active transport
c: Water moves across the plasma membrane by osmosis and carries the ions with it.

Answer 13

its b

Answer 14

thanks i got a 100

Answer 15

thats good xD