The two most common types of polyploidy in humans are
A. trisomy and aneuploidy.
B. triploidy and haploidy.
C. triploidy and tetraploidy.
D. tetraploidy and diploidy.
E. haploidy and diploidy.
C
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In the context of chemical evolution, DNA's structure is interesting because it suggests a possible copying mechanism. What about DNA's structure facilitates copying?
A) It has the same number of purines and pyrimidines. B) The nitrogenous bases are located on the inside of the double helix. C) The strands of the double helix are complementary. D) DNA always goes from 5 prime to 3 prime.
Polyproteins made from human viruses such as poliovirus must be ________ in order to yield the required functional units of the virus
A) able to interact with VPg proteins B) chemically modified with either glycolation or methylation C) post-translationally cleaved D) properly folded into secondary and tertiary structures
Answer the question by using the accompanying graph. The optimal pH for enzyme 1 is ____
a. 2 b. 3 c. 4 d. 7 e. 8
If no oxygen is available to a cell, then the net ATP production resulting from the metabolism of a single glucose molecule is
A) no ATP. B) 36 ATP molecules. C) 1 ATP molecule. D) 32 ATP molecules. E) 2 ATP molecules.