How do proto-oncogenes affect the cell cycle?
A. inhibit it
B. they do not affect the cell cycle
C. stimulate it
D. they rapidly accelerate it and then cause it to pause
E. they cause it to temporarily pause and then rapidly accelerate
Answer: C
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Regarding CO2 fixation mechanisms in the autotrophic green sulfur bacteria,
A) Chlorobium uses the reverse citric acid cycle, and Chloroflexus uses the hydroxypropionate pathway. B) Chlorobium uses the hydroxypropionate pathway, and Chloroflexus uses the reverse citric acid cycle. C) both Chlorobium and Chloroflexus use the reverse citric acid cycle. D) both Chlorobium and Chloroflexus use the hydroxypropionate pathway.
Who is primarily responsible for the quality of specimens submitted to the CML?
A) microbiologist who is in charge of the CML B) pathologist who is in charge of “the lab” C) person who collects the specimen D) the person who transports the specimen to the CML
If the frequency of expression of a recessive trait in a
population is 16 percent, the frequency of the recessive allele is what percent? a. 16 b. 25 c. 40 d. 50 e. 67
A leaf without a blade is said to be sessile
____________________ Indicate whether the statement is true or false.