If a person had defective centromeres, which
of the following would result?
a. the DNA would not coil around histones
b. DNA could not duplicate
c. sister chromatids could not attach to each
other
d. the chromosome number would be reduced
e. none of these would result
C
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Secondary metabolites are organic compounds produced outside of primary metabolic processes essential for cell structure and growth. Based on this information, which of the following is an example of a secondary metabolite?
A. glucose. B. lipids. C. proteins. D. RNA. E. steroids.
Why was it not possible to classify viruses by morphology when they were initially discovered?
a. Initially, their morphology could change during infections. b. Once inside the host, they replicate too quickly to be inspected for discernable shape. c. They are too small to be seen with a standard microscope. d. So many of them have identical morphology but different hosts and modes
Sperm cells are indicated by the letter ____
a. A b. B c. C d. D e. E
Histamine is produced by_______ specifically to promote acute inflammation.
a) Neutrophils b) Plasma Cells c) T-helper Cells d) Mast Cells