Mars Case
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Who was/were the first to propose that cell membranes are phospholipid bilayers?
Answer
Selected Answer:
E. E. Gorter and F. Grendel
Question 2
1 out of 1 points
Which of these often serve as receptors or cell recognition molecules on cell surfaces?
Answer
Selected Answer:
E. glycoproteins
Question 3
1 out of 1 points
Which of the following is a reasonable explanation for why unsaturated fatty acids help keep any membrane more fluid at lower temperatures?
Answer
Selected Answer:
A. The double bonds form kinks in the fatty acid tails, forcing adjacent lipids to be further apart.
Question 4
0 out of 1 points
The following questions are based on the reaction A + B C + D shown in Figure 8.2.
Figure 8.2
Which of the following represents the G of the reaction?
Answer
Selected Answer:
A. a
Question 5
1 out of 1 points
Why is ATP an important molecule in metabolism?
Answer
Selected Answer:
B. It provides energy coupling between exergonic and endergonic reactions.
Question 6
1 out of 1 points
In animal cells, hydrolytic enzymes are packaged to prevent general destruction of cellular components. Which of the following organelles functions in this compartmentalization?
Answer
Selected