The impulse that signals each heartbeat is conducted along which path?

1) atrioventricular node
2) bundle branches
3) sinoatrial node
4) atrioventricular bundle
a. 1 ? 2 ? 3 ? 4
b. 1 ? 3 ? 4 ? 2
c. 3 ? 1 ? 4 ? 2
d. 3 ? 4 ? 2 ? 1
e. 4 ? 1 ? 2 ? 3


C

Biology & Microbiology

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While observing a new species of seaweed under the microscope, it becomes apparent that the entire organism is one large cell containing several nuclei. Which of the following best describes the organization of this organism?

A. coenocytic B. complex multicellular C. simple multicellular D. filamentous E. eukaryotic

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Hair cells are important in the sense of:

a. touch b. hearing c. taste d. sight e. equilibrium

Biology & Microbiology

When a population is made up of individuals who are genetically identical, each individual is said to be a ____ of the

other individuals.

a. homolog b. clone c. twin d. recombinant e. probe

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When treated with reagents that destroy _____________, the bacterial nucleoid will unfold

a. lipids only. b. RNA only. c. proteins only. d. RNA or proteins. e. RNA, proteins, or lipids.

Biology & Microbiology