A blocked coronary sinus would block blood flow:a

into the superior vena cava.
b. into the inferior vena cava.
c. into the pulmonary arteries.
d. returning from the pulmonary arteries.
e. returning from the coronary circulation.


e

Biology & Microbiology

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The bacterial species most frequently associated with necrotizing fasciitis is:

A) Francisella tularensis. B) Staphylococcus aureus. C) Streptococcus pneumoniae. D) Streptococcus pyogenes.

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In plants, the sporophyte generation produces _______ as a result of meiosis.  

Fill in the blank(s) with the appropriate word(s).

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Crossing over is limited to a single occurrence for a chromosome

Indicate whether the statement is true or false.

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Is cultural transmission a form of phenotypic plasticity?

a. Yes, it causes phenotypic change without corresponding genetic change. b. Yes, it involves learning. c. No, phenotypic plasticity is an individual trait and not a population process. d. No, cultural transmission involves learning, which is not a form of plasticity.

Biology & Microbiology