Which is the most frequently chosen prokaryotic host for use in cloning techniques?

A. Staphylococcus aureus
B. Bacillus subtilis
C. Escherichia coli
D. Saccharomyces cerevisiae


Answer: C

Biology & Microbiology

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Astrobiology is considered a sub-discipline of microbiology because

A. microbes are known to exist on other planets. B. all extraterrestrials known are microbial. C. life elsewhere in the universe is likely to be microbial. D. only microbes can reproduce under the extreme conditions in outer space.

Biology & Microbiology

Fats are major components of the cell’s ____

a. membranes b. cytoplasm c. proteins d. ribosomes e. DNA

Biology & Microbiology

Which of the following statements is false?

a. About 300 species of turtles currently exist. b. Turtles do not have teeth. c. Turtle shells are enlarged in marine forms. d. Turtles must return to land to lay eggs. e. Most sea turtle species are highly endangered.

Biology & Microbiology

Tendons and ligaments are composed of ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology