Hi I hope you're doing fine.I need help with this questions please!thank you! The plasma membrane consists of both phospholipids and proteins. Oxygen (02) and carbon dioxide (cO2) can readily pass through the plasma membrane,but water (H2O) requires a transport protein, called an aquaporin, to cross the membrane in the great quantities required by cells. Why is a transport proteinneeded to transport H20, but 02 and CO2 can pass through without a protein?

Simple diffusion is responsible for the unfold of an air thing through a space, or of some drops of…

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Science

Biology

Hi I hope you're doing fine. I need help with this questions please! thank you!

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter3: Cell Structure And Function

Section: Chapter Questions

Problem 10RQ: Which plasma membrane component can be either found on its surface or embedded in the membrane...

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Question

Hi I hope you're doing fine.

I need help with this questions please!

thank you!

The plasma membrane consists of both phospholipids and proteins. Oxygen (02) and carbon dioxide (cO2) can readily pass through the plasma membrane,
but water (H2O) requires a transport protein, called an aquaporin, to cross the membrane in the great quantities required by cells. Why is a transport protein
needed to transport H20, but 02 and CO2 can pass through without a protein?

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The tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a. phosphate groups; hydrophobic b. fatty acid groups; hydrophilic c. phosphate groups; hydrophilic d. fatty acid groups; hydrophobic
In the fluid mosaic model: plasma membrane proteins orient their hydrophilic sides toward the internal bilayer. phospholipids often flip-flop between the inner and outer layers. the mosaic refers to proteins attached to the underlying cytoskeleton. the fluid refers to the phospholipid bilayer. the mosaic refers to the symmetry of the internal membrane proteins and sterols.
Why is it advantageous for the cell membrane to be fluid in nature?
Which plasma membrane component can be either found on its surface or embedded in the membrane structure? a. protein b. cholesterol c. carbohydrate d. phospholipid
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When cellular transport through the plasma membrane must be provided with energy in form of ATP to power the transport process, what is this called? A. Selective permeability B. Passive transport C. Active transport D. Diffusion
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What features of a membrane are major contributors to its selectivepermeability?a. phospholipid bilayerb. transport proteinsc. glycolipids on the outer surface of the membraned. peripheral membrane proteinse. both a and b
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which of the following statements is correct about the movement of water across a plasma membrane a. it cannot pass through any ion channels b. it moves through the membrane via mediated transport c. even though it a polar molecule, it moves readily through the nonpolar lipid bilayer d. artificial lipid membranes are impermeable to water
During an investigation on membrane transport, a researcher exposed bacterial cells to different concentrations of two different solutes: A and B. The rate of transport of each solute into cells isrepresented in the graphSolute ASolute BSolute ConcentrationWhich of the following best explains the greater rate of transport for solute A than for solute B at higher solute concentrations?A Solute A is being transported by simple diffusion, which does not rely on membrane proteins to control the rate of transportSolute A is being transported by active transport, which uses ATP and has higher rates of transport than passive transportSolute A is being transported by facilitated diffusion, which uses membrane proteins to increase the rate of transportRate of Transport