The kangaroo rat gets the bulk of its water from ____
a. drinking liquids
b. absorption through its skin
c. ingesting food
d. oxidative reactions in its cells
e. reuptake of water from urine
ANSWER: d
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True or False: A small, local population of organisms is very sensitive to drastic environmental changes, but is unaffected by predation
A. true B. false
By definition, if the DNA of a cell undergoes a spontaneous mutation, is was NOT due to ________.
A. spontaneous depurination of nucleotides B. insertion of transposons C. exposure to radiation D. errors in DNA replication
All of the following chemicals are vesicant agents, EXCEPT:
A) chlorine. B) lewisite. C) phosgene oxime. D) sulfur mustard.
What unites the organisms shown in this figure?
a. They are all single celled. c. They are all archaea. b. They all have chloroplasts. d. They are all eukaryotes.