During bacterial conjugation, the recipient cell receives a single-stranded loop of DNA.
a. true
b. false
Ans: a. true
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Aerobic metabolism (select all correct choices):
A. occurs in the mitochondria. B. provides energy for longer-term, sustainable activity than does anaerobic metabolism. C. leads to the production of energy-rich NADH and FADH2 molecules. D. leads to the production of lactic acid in muscle cells. E. utilizes oxygen at the end of the electron transport chain, releasing water.
Fibrous proteins have extensive ________ structure, which allows them to be highly ordered and repetitive.
A) primary B) secondary C) tertiary D) quaternary E) multiprotein complex
The movement of substances to regions of lower concentration is called
A. pinocytosis. B. exocytosis. C. diffusion. D. active transport. E. pumping.
Which of the following is characteristic of prokaryotic genomes but NOT eukaryotic genomes?
A) histones B) circular chromosomes C) linear chromosomes D) enclosed in a nuclear membrane E) typically consist of a few to several chromosomes