Bacteriophage lambda ____
a. is a temperate phage
b. is a virulent phage
c. infects plant cells
d. infects animal cells
e. is a T-even phage
ANSWER: a
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Which of the following correctly characterizes the F1 subunit of ATP synthase?
A. It is embedded in the inner mitochondrial membrane. B. It forms the channel through which protons flow. C. It is the catalytic unit that synthesizes ATP. D. None of these answer options correctly characterizes the F1 subunit of ATP synthase.
An operon is:
A. a gene coding for a repressor protein. B. a region of DNA consisting of the promoter, operator, and coding sequence for structural proteins. C. a region of DNA consisting of the operator and coding sequence for structural proteins. D. a region of DNA consisting of the promoter and operator sequences needed to regulate one or more structural genes. E. a single molecule of RNA coding for more than one protein.
What important instrument was used in early navigation to find the latitude of a ship?
a. Sextants b. Bathygraphic charts c. Chronometers d. GPS
How do ruminants digest cellulose?
What will be an ideal response?