Collar cells are found in:
a. segmented worms.
b. sponges.
c. cnidarians.
d. flatworms.
e. nematodes
Ans: b. sponges.
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Which of the following RNAs use a Ran-independent pathway for the transport of RNA across the nuclear membrane?
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A closed culture system is used to determine a population growth curve.
Answer the following statement true (T) or false (F)