Which of the following is an accurate description of the plasma membrane?

A) It is a phospholipid bilayer embedded with proteins.
B) It is permeable to all substances.
C) It is a solid material.
D) It separates the nuclear contents from the environment.


Answer: A

Biology & Microbiology

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In the presence of water, nonpolar associations form between molecules or regions of molecules that

are ____.

a. partially charged b. hydrophobic and hydrophilic c. hydrophobic d. fully charged e. hydrophilic

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Which term is given to the total genetic information carried by all members of a population?

A) breeding unit B) genome C) gene pool D) race E) chromosome complement

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How are species-area relationships traditionally plotted?

A. on a log-linear plot B. on a bar graph. C. on a log-log plot D. on a linear plot E. as a function of distance

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List the similarities and differences between the functions of the chloroplasts and mitochondria. Include the

identification of specific structures in your comparison. What will be an ideal response?

Biology & Microbiology