The base of the food web in the open ocean and the bottom beneath the open ocean is:
a. algae.
b. seagrasses.
c. chemosynthetic bacteria.
d. phytoplankton.
e. detritus.
D
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What experiment demonstrated that the 5'-to-3' exonuclease activity of DNA polymerase I was essential for cell viability?
What will be an ideal response?
A "5? cap":
a. prevents translation. b. prevents the binding of ribosomes. c. marks the mRNA for degradation. d. is added to mRNA but not pre-mRNA. e. protects mRNA from degradati
A random variable that can only take on a countable number of values is known as what type of random variable?
A. Continuous B. Population parameter C. Probability density function D. Discrete
What is the hallmark of all horizontal gene transfers?
1) Transfer of DNA between organisms of the same generation 2) Transfer of DNA using a virus 3) The use of plasmids 4) Transfer of DNA from parent to offspring