Which of the following types of molecules are the major structural components of the cell membrane?
A) phospholipids and cellulose
B) nucleic acids and proteins
C) phospholipids and proteins
D) proteins and cellulose
E) glycoproteins and cholesterol
Answer: C
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Membrane Structure and Function
- Based on Figure 7.19 in your textbook, which of these experimental treatments would increase the rate of sucrose transport into the cell?
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- Several seriously epidemic viral diseases of earlier centuries were then incurable because they resulted in severe dehydration due to vomiting and diarrhea. Today they are usually not fatal because we have developed which of the following?
- Proton pumps are used in various ways by members of every kingdom of organisms. What does this most probably mean?
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- What mechanisms do plants use to load sucrose produced by photosynthesis into specialized cells in the veins of leaves?
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- What are the membrane structures that function in active transport?
- Which of the following membrane activities require energy from ATP hydrolysis?
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