Which one of the following is thought to be responsible for causing dandruff?
a) Malassezia furfur
b) Propionibacterium acnes
c) Staphylococcus aureus
d) Staphylococcus epidermidis
Ans: a) Malassezia furfur
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You wish to obtain a pure mitochondria sample from lysed cells. The best way to obtain this sample would be
A) centrifugation. B) chromatography. C) polyacrylamide gel electrophoresis. D) agarose gel electrophoresis. E) both choices A and C
In the case of T-even phages, the burst size is about
A. 1 per host cell. B. 5 per host cell. C. 200 per host cell. D. 1,000 per host cell.
Maternal control elements in the oocyte’s cytoplasm
consist largely of a. DNA. b. RNA. c. cytoskeletal elements. d. cytoplasmic organelles. e. specialized proteins.
A goal of genomics is to ________
A) understand the mechanisms that control gene expression B) provide a way to produce large quantities of a particular gene product C) manipulate genetic material for human purposes D) regulate how genes are expressed without changing the protein they encode