What is the advantage for birds and mammals of having a four-chambered heart?
A. All of the answer options are correct.
B. It allows for complete separation of
systemic and pulmonary circulation.
C. It allows for complete separation of
oxygenated and deoxygenated blood.
D. It allows for different pressures in the
systemic and pulmonary circuits.
E. It allows for increased supply of
oxygenated blood to active tissues.
A
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Agents that cannot survive outside of the host for long periods of time must be transmitted by _____ transmission
Fill in the blank(s) with the appropriate word(s).
Nondisjunction results in
A. two small daughter cells that disappear and two normal-sized cells. B. two polar bodies. C. daughter cells with different numbers of chromosomes. D. two cells with equal numbers of chromosomes.
What was the purpose of Stanley Miller's experiment?
What will be an ideal response?
Anti-human antibodies (specific for human IgG antibodies) with fluorescent molecules covalently attached are used for
A) direct fluorescent antibody tests. B) indirect fluorescent antibody tests. C) direct ELISAs. D) indirect ELISAs. E) immunodiffusion tests.