For heart muscles to beat in a coordinated rhythm ions must move from one cell to the next through

A. hemidesmosomes.
B. adherens junctions.
C. desmosomes.
D. gap junctions.
E. focal adhesions.


Answer: D

Biology & Microbiology

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A dichotomous dependent variable is a variable that:

A. cannot be used to identify causal effects. B. can take on just two values, typically recorded as 0 and 1. C. requires that you use OLS to estimate any determining function. D. leads to biased estimates of the coefficient of interest.

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Which of the following places the steps of the Gram stain in the correct order? 1-Alcohol-acetone 2-Crystal violet 3-Safranin 4-Iodine

A) 1-2-3-4 B) 2-1-4-3 C) 2-4-1-3 D) 4-3-2-1 E) 1-3-2-4

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Some algae are more closely related to plants than they are to other algae.

Answer the following statement true (T) or false (F)

Biology & Microbiology