An instrument that magnifies slight differences in the refractive index of cell structures is called a (n) ________ microscope.
A. phase-contrast
B. densitometric
C. electron
D. fluorescence
Answer: A
Biology & Microbiology
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The enzyme responsible for replacing RNA primers with DNA is
A. DNA polymerase. B. helicase. C. topoisomerase II. D. DNA ligase. E. DNA replicase.
Biology & Microbiology
Select the correct satement regarding the rate of mutation?
A. Rates of mutation per cell generation typically range from 10-5 to 10-9 B. Mutation rates are consistent across species C. Mutation rates are not influenced by environmental conditions D. Mutation rates are constant
Biology & Microbiology
When body temperature drops below normal, a person starts shivering uncontrollably. This is an example of negative feedback.
Answer the following statement true (T) or false (F)
Biology & Microbiology
Why does food taste bland when you have a cold?
What will be an ideal response?
Biology & Microbiology