Chlamydia can prevent the formation of phagolysosomes and therefore can
a. avoid being phagocytized.
b. avoid destruction by complement.
c. prevent adherence.
d. avoid being digested.
e. none of the above
Answer: d. avoid being digested.
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The purple nonsulfur bacteria
A. utilize organic molecules as a source of electrons for photosynthesis. B. typically can grow aerobically in the dark as chemoorganoheterotrophs. C. grow anaerobically as photoorganoheterotrophs. D. All of the choices are correct.
Insulin is secreted by cells in the _______.
A. testes B. pituitary C. liver D. pancreas
The genomes of most plant viruses consist of single stranded DNA
____________________ Indicate whether the statement is true or false.
Tropical deciduous forests experience ____
a. mean annual temperature of at least 25oC b. summer drought c. winter drought
d. frequent mists e. slow growth