Please choose the hepatitis virus that is primarily spread through sexual contact.
A) HAV
B) HBV
C) HCV
D) All of these choices are correct
B) HBV
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Refer to the figure above. The mRNA is smaller than the length of the DNA that codes for it because _____
A) the regulatory regions (exons) of the gene are not transcribed B) post-transcriptional modification removes the introns C) post-transcriptional modification removes the exons D) bases are added to the tail of the primary transcript
The tidal volume and inspiratory reserve volume together make up which of the following?
A) total lung capacity B) residual volume C) inspiratory capacity D) functional residual capacity E) vital capacity
An optimal strategy for an animal in procuring food would involve all of the following EXCEPT:
a. securing essential nutrients. b. maximizing the size of each prey item. c. minimizing the risk of predation during foraging and feeding. d. maximizing energy gained. e. minimizing energy expended.
An organism has been found to contain a defective form of photolyase. What function might be impaired in this organism?
A. repair of DNA damage caused by UV light B. recognition of damaged DNA by the UvrABC complex C. stabilization of single-stranded DNA during DNA replication D. lengthening of the tips of chromosomes