The most serious type of mutation is a ________ mutation.
A. frameshift
B. point
C. silent
D. back
Answer: A
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At which point on the phylogeny shown did the amnion first appear?
A. C B. A C. B D. D E. E
Based on your knowledge of the chemistry of the cell membrane, which of the following compounds would you couple with a new drug in order to achieve better uptake by cells?
A) carbohydrates B) polar amino acids C) lipids D) several mannose-6-phosphate monomers E) any hydrophilic substance
The most digestion in the human body takes place in the
a. liver. b. mouth. c. large intestine. d. small intestine. e. stomach.
Biochemical tests _________________.
a. are the main methods used to identify unknown bacteria b. are visualized using microscopes c. are used to determine rate of growth d. are the most effective way to determine bacterial shape