If the following are placed in the order of occurrence, which would be the third step?
a. diapedesis
b. digestion
c. formation of a phagosome
d. formation of a
phagolysosome
Answer: c. formation of a phagosome
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Initiation factors are ____ that assist in the initiation of transcription
a. mRNAs b. proteins c. tRNAs d. amino acids e. snRNPs
In skeletal muscle contraction, which of the following acts to allow the crossbridge cycle to occur
when it flows into the cytosol through open ion channels?
a. troponin b. Ca2+ c. tropomyosin d. ATP e. acetylcholine
Humans are least closely related to the
a. chimpanzee. b. orangutan. c. gorilla. d. tarsier. e. gibbon
Why is it helpful to think about the moment conditions of a simple linear regression even if OLS yields the same estimates?
A. The moment conditions will get the smaller standard errors. B. The moment conditions establish causality whereas OLS just estimates correlation. C. The moment conditions are easier to program in Excel. D. The moment conditions facilitate assessing assumptions about causality.