Why are maximum rates of water flow higher in angiosperms than in gymnosperms?
A. Angiosperms have tracheids and
gymnosperms have vessels.
B. Angiosperms have longer and wider xylem
conduits than gymnosperms.
C. Angiosperms have pits.
D. Angiosperms require more H2O than
gymnosperms.
B
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DNA replication always proceeds by adding new bases to the _______ end of an existing strand.
A. 1' B. 2' C. 3' D. 4' E. 5'
Your patient has subacute bacterial endocarditis caused by a member of the viridans group of streptococcus. Which one of the following sites is MOST likely to be the source of the organism?
A. Skin B. Colon C. Oropharynx D. Urethra
The theory of aging that posits that aging is caused by irreparable damage to the cells, tissues, and organs of an organism brought about by such things as errors in protein synthesis and the accumulation of toxic metabolites is the ________
A) theory of senescence B) rate of living theory of aging C) evolutionary theory of aging D) particulate theory of aging
The molluscan class Cephalopoda includes all of the following kinds of animals EXCEPT:
a. octopi. b. nautiluses. c. cuttlefish. d. snails. e. squid.