Which of the following statements is false about
amphibians?
a. There are currently about 5,500 known species.
b. Many species are declining in abundance.
c. Several species of frogs and salamanders are
now listed as threatened or endangered.
d. Chemical pollution of aquatic habitats is not a
contributing factor to their current problems.
e. Mark Twain’s “celebrated jumping frog” is at
risk.
Answer: d
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You are injecting a dye into a eukaryotic cell to detect a specific functional enzyme in the cytosol. Where would you need to inject the dye?
A. You would have to inject the dye into the membrane of the rough ER. B. The dye would go between the plasma membrane and membrane of the organelles. C. Injection of the dye must occur in the inner membrane space of the mitochondria. D. The Golgi apparatus holds the cytosol, and therefore the dye must be injected there.
You have blood type O and need a transfusion. Which donor would be best?
a. type O b. type AB c. type B d. type A
Which panel of the figure contains the recombinant
DNA plasmids that will be incorporated into a host cell? a. A b. B c. C d. D e. none of these
What happens to CO2 when it moves into the stroma?
A) It gets incorporated into the Calvin cycle and goes toward the formation of glucose. B) It is converted to water. C) It immediately passes on to the thylakoids. D) The CO2 becomes a by-product of cellular respiration. E) The CO2 splits into C and O2.