Each chromosome has one or more ________ site(s) where replication begins.
A. bifurcate
B. origin
C. promoter
D. replicon
Answer: B
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When cytosolic levels of iron increase, intracellular ferritin levels will
A. decrease. B. not change. C. increase. D. fluctuate by increasing and decreasing in a random fashion. E. drop until iron levels increase further.
The sex chromosome composition of a person with Turner syndrome is most accurately written as
a. XXX. b. XO. c. XXY. d. XYY. e. X.
Chromosomes align along the equator during
A. metaphase. B. anaphase. C. telophase. D. prophase.
The glycocalyx of a eukaryotic cell performs all of the following functions EXCEPT
A. protection against dehydration. B. anchoring cells to each other. C. cellular recognition and communication. D. transfer of genetic material between cells. E. strengthening the cell surface.