Somatic cell nuclear transfer
a. uses differentiated cells.
b. uses stem cells.
c. produces human embryos for research
d. is used to breed livestock
e. does all of these.
Answer: e
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An mRNA molecule has a cap attached to its 5' end and a poly-A tail attached to its 3' end
a. True b. False Indicate whether the statement is true or false
If a species A has 10 organisms living in a given area, and species B has 1,000 organisms living in the same area, species B could be described as which of the following?
a. having a lower death rate compared to species A b. having a higher growth rate compared to species A c. having a higher species richness compared to species A d. having a lower species richness compared to species A
The large-scale community of organisms in a major ecological setting is a(n) ____
a. environmental system b. habitat c. biome d. ecosystem e. niche
The goal of the streak plate technique is to
A) compare how the shape, color and margin differ in colonies from a pure culture. B) isolate a pure culture for study from a single colony. C) spread out a thick layer of bacteria and isolate the bacteria that outcompete the rest. D) compare all of the colonies on a plate with a mixed culture. E) visualize all of the colonies on a plate from a pure culture.