On which of the following intracellular locations does clathrin organize a coat and form vesicles?
A) lysosomes
B) trans-Golgi complex
C) endoplasmic network
D) inner membrane of mitochondria
E) regulated secretory vesicles
Answer: B
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Forensic technicians unearth a skeleton from a shallow grave. They extract a tiny amount of DNA from the pulp found in the teeth. How could they obtain sufficient DNA for an analysis of the victim's genes?
A. Subject the DNA to gel electrophoresis. B. Use a nucleic acid probe. C. Subject the specimen to amniocentesis. D. Use the polymerase chain reaction. E. Subject the DNA to restriction enzymes.
Which of the following procedure-analyses is mismatched?
A. dideoxy termination-DNA sequencing B. Southern blotting-DNA gene detection C. microarray analyses-differential expression of mRNAs D. gel electrophoresis-size separation of nucleic acids or proteins E. mass spectrometry-DNA fragment analyses
Which is not true about mismatch repair?
A. It utilizes an endonuclease. B. It requires DNA polymerase and DNA ligase. C. It utilizes the state of methylation of the DNA to differentiate between strands. D. It removes both strands in the mismatch area.
After formation, an asteroid could produce an iron core and a rocky silicate mantle if it melted then
a. differentiated. b. outgassed. c. condensed. d. accreted. e. sublimed.