Pre-mRNA is found____
a. only in prokaryotes
b. in both the nucleus and cytoplasm of eukaryotes
c. only in the cytoplasm of eukaryotes
d. in both prokaryotes and eukaryotes
e. only in the nucleus of eukaryotes
ANSWER: e
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Evolution _____________. (Mark true (t) or false (f) for each statement.)
____ is a change in allele or genotype frequency over time ____ always results in a visible change in the physical characteristics of an organism ____ is a process that takes many, many generations ____ is only seen in unicellular organisms ____ is a natural phenomenon that is outside the influence of humans ____ can only occur in the natural environment ____ is not seen in domesticated animals ____ always results in an increase in an organism's fitness ____ is inherently random in nature ____ acts on animals but not plants What will be an ideal response?
Every node in a phylogenetic tree represents a(n) ________
A) common ancestor B) extinction event C) transitional form D) sister species
All of the following molecules can be stored by cells of your body for later use except
A. carbohydrates. B. fats. C. proteins. D. None of these molecules can be stored.
In mitosis, if a parent cell has 16 chromosomes, each daughter cell will have how many chromosomes?
A) 64 B) 4 C) 32 D) 16 E) 8