A fundamental difference between bacterial and archaeal membranes is that ________.
A. archaeal membranes must be able to solidify due to the extreme habitats the organisms occupy
B. archaeal membranes have a hydrophobic exterior and a hydrophilic interior vs. the reverse in bacterial membranes
C. bacterial membranes are always comprised of phospholipid bilayers, whereas archaeal membranes can be bilayers or monolayers
D. the phospholipids in archaea are comprised of a glycerol molecule and three fatty acids vs. two fatty acids in bacteria
Answer: C
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The rapid evolution of bacteria and fungi in certain environments is used in the field of:
a. bioremediation. b. plant genomics. c. medical diagnostics. d. human disease genetics. e. human genome sequencing.
New genes are introduced into a gene pool by
A. evolution. B. spontaneous mutations. C. natural selection. D. inheritance of acquired characteristics.
DNA ligase is important in the replication process because it can join together segments of DNA into a single daughter strand
Indicate whether the statement is true or false
_________ is the flow of alleles in and out of a population as a result of the migration of individuals or gametes
A. Natural selection B. Mutation C. Genetic drift D. Gene flow