Blood in arteries ____
a. travels to arterioles
b. travels away from the heart only if it is oxygenated
c. always travels toward the heart
d. travels from the lungs
e. is always oxygenated
ANSWER: a
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Arrange the steps in the Calvin cycle in order from earliest to latest
A. carboxylation, reduction, regeneration B. reduction, regeneration, carboxylation C. regeneration, carboxylation, reduction D. carboxylation, regeneration, reduction E. reduction, carboxylation, regeneration
Prions ____
a. are more complex than viruses b. have large DNA genomes c. cause neurodegenerative disorders in mammals d. infect plant cells e. encode their own polymerases for nucleic acid replication
Which of the following is not a member of
Osteichthyes? a. teleosts b. ray-finned fish c. lungfish d. stingrays e. lobe-finned fishes
Balanced polymorphism can be maintained by the combined actions of:
a. the founder effect and genetic drift. b. heterozygote advantage and genetic drift. c. heterozygote advantage and the founder effect. d. heterozygote advantage and frequency-dependent selection. e. frequency-dependent selection and the founder effect.