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
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Many diseases are caused by genes that do not function properly. Which technology involves replacing a defective gene with a normal gene?
A) pharmacogenomics B) recombinant DNA C) gene therapy D) cloning
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.
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
Some algae are more closely related to plants than they are to other algae.
Answer the following statement true (T) or false (F)