Multiple Choice
Why are cell membranes composed primarily of hydrophobic molecules?
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2. Cell Chemistry & Cell Components
Biological Membranes
Multiple Choice
Which of the following statements concerning carbohydrates associated with the plasma membrane is correct?
A
Carbohydrates are found associated with the membranes of prokaryotic cells only.
B
The carbohydrate composition of most eukaryotic plasma membranes is quite similar.
C
Carbohydrates on the plasma membrane are typically long, complex chains of several dozen monosaccharides.
D
Carbohydrates associated with the plasma membrane are located on both surfaces of the membrane.
E
Membrane carbohydrates function primarily in cell-cell recognition.
Verified step by step guidance1
Understand the role of carbohydrates in the plasma membrane: Carbohydrates are crucial for cell-cell recognition, which is essential for the immune response and tissue formation.
Identify the location of carbohydrates in the plasma membrane: In eukaryotic cells, carbohydrates are typically found on the extracellular surface of the plasma membrane, not on both surfaces.
Consider the structure of membrane carbohydrates: They are often short chains of monosaccharides, forming glycoproteins and glycolipids, rather than long, complex chains.
Differentiate between prokaryotic and eukaryotic cells: Carbohydrates are associated with the plasma membranes of eukaryotic cells, not exclusively prokaryotic cells.
Evaluate the diversity of carbohydrate composition: The carbohydrate composition of eukaryotic plasma membranes can vary significantly between different cell types and organisms, contrary to being quite similar.
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