Answered: What is the primary function of…

What is the primary function of carbohydrates attached to the exterior of cell membranes? O recognition of cells channels through membrane keep the membrane fluid

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter5: Structure And Function Of Plasma Membranes

Section: Chapter Questions

Problem 6RQ: What is the primary function of carbohydrates attached to the exterior of cell membranes?...

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Concept explainers

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.

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What is the primary function of carbohydrates attached
to the exterior of cell membranes?
O recognition of cells
channels through membrane
keep the membrane fluid

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Although lipids are largely responsible for providing and maintaining the structure of the Ven membrane, most of the membrane's functions are due to the proteins that are present in it. Membrane proteins can be classified as integral or peripheral, depending on how they are Posiioned in the phospholipid bilaver. Based on figure 12, differentiate integral and peripheral proteins. Write your answer on the table below. Table 18: Difference Between Integral and Peripheral Membrane Proteins Integral Proteins Peripheral Proteins
A protein with a domain inside the hydrophobic plasma membrane and a hydrophilic domain inside of the cell is likely what kind of protein? Integral Peripheral O Anchored O Terminal O None of the above DUESTION 29
What major type of molecule contributes to the formation of the cell membrane and what biochemical properties of this molecule promotes the formation of the membrane? What effect allows this type of molecule to come together to form a bilayer and explain how the effect works? A▾ B I I e 2 2
In a lipid bilayer, the of all the lipid molecules are sandwiched between all of the __________. a. hydrophilic tails; hydrophobic heads b. hydrophilic heads; hydrophilic tails c. hydrophobic tails; hydrophilic heads d. hydrophobic heads; hydrophilic tails
Why is it advantageous for the cell membrane to be fluid in nature?
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.
On which of the following intracellular locations does clathrin organize a coat and form vesicles? lysosome trans-Golgi rough ER cis-Golgi
the structure of the plasma membrane is best described as: two layers of phospholipids stacked on top of each other, with proteins embedded in the phospholipids Oa single layer of proteins and polysachharides mixed together two layers of proteins stacked on top of each other O many sheets of peptidoglycan stacked on top of each other O one layer of triglycerides on top of a layer of proteins
proteins are inserted into the membrane rather than being loosely associated with its surface. mosaic cholesterol O integral aminoacyl fluid peripheral
What is the expected subcellular location for a protein has only an amino-terminal signal sequence [N-SIG]? lysosome secreted from the cell into extracellular space cytoplasm nucleus
Cium out of the cell while Sodium flows in, thy maintai in the Eytosol the low Calawn toneentration Endocytosis 18. Contrast each of the following types of endocytosis and describe how each is used by cells. Phagocytosis - Pinocytosis - Receptor Mediated - AKED
What materials can easily diffuse through the lipid bilayer, and why? What is receptor-mediated endocytosis said to be more selective than phagocytosis or pinocytosis? What do osmosis, diffusion, filtration, and the movement of ions away from like charges all have in common? In what do they differ?