Which of the following is bacteriostatic?
A) heating in an oven at 171°C for an hour
B) freezing below 0°C
C) filtration
D) autoclaving
E) flash pasteurization
B
Bloom's Taxonomy: Comprehension
Section: Physical Methods of Microbial Control
Learning Outcome: 9.14
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To remove noncoding sequences in the pre-mRNA of eukaryotes, multiple snRNPs combine with proteins to form a larger complex called the ___________ .
A. 5' cap B. introsome C. ribosome D. spliceosome E. 3' poly-A tail
Which of the following best describes the mechanism of DNA replication in which both parental strands remain together following replication?
A. Dispersive B. Semi-conservative C. Conservative D. All of the answers are correct
A phospholipid molecule has
A. hydrophobic tails that are attracted to water. B. a hydrophilic head that is repelled by water. C. hydrophilic tails that are repelled by water. D. a hydrophilic head that is attracted to water. E. a hydrophobic head that is repelled by water.
Which of the following is the proper sequence for mitosis?
a. metaphase, prophase, anaphase, telophase b. metaphase, telophase, prophase, anaphase c. prophase, metaphase, anaphase, telophase d. anaphase, metaphase, prophase, telophase e. prophase, anaphase, metaphase, telophase