A gene that produces a protein important in more than one biochemical pathway is
a) dominant.
b) recessive.
c) pleiotropic.
d) codominant.
e) incomplete dominant.
Ans: c) pleiotropic.
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Which of the following would occur from a mutation in the gene's promoter region?
A. The sequence of the mature mRNA would change. B. The ability of pre-mRNA to be properly spliced would change. C. The ability of mRNA to be translationally regulated would change. D. The amino acid sequence of the translated protein would be altered. E. The rate of transcription may increase or decrease.
Bacterial endospores are produced by ________.
A. Mycoplasma B. Staphylococcus C. Entamoeba D. Bacillus
The carbonic acid and bicarbonate buffer in blood is extremely important to help maintain homeostasis. What would happen to the pH of the blood if bicarbonate were removed?
A. Removing bicarbonate from the blood would not affect the pH B. Removing bicarbonate from the blood would increase the pH C. Removing bicarbonate from the blood would decrease the pH
Which of the following conditions will most favor the growth of microbes?
A. waterlogged with little mineral content B. moderately moist soil with lots of organic compounds C. alternating moist and dry with alkaline conditions D. mostly dry soil with moderate amounts of organic compounds and acidic conditions E. alternating moist and dry soil with high salt content