The process by which bacterial cells transfer DNA is

a. horizontal gene transfer.
b. conjugation.
c. transduction.
d. transformation.
e. all of these.


Answer: e

Biology & Microbiology

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The Coconino Sandstone, which consists mainly of weathered sand and contains trace fossils such as ripple marks and reptile tracks, suggests that this layer is similar to which of the following environments?

A. Desert B. River system C. Coastal plain D. Ocean E. Tropical forest

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A branching tree that represents the evolutionary relationships among a number of species is, in scientific terms, called a(n)

A. family tree. B. pedigree. C. androgeny. D. phylogenetic tree.

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Digestion of microorganisms occurs in phagosomes

Indicate whether the statement is true or false

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During a fermentation experiment in lab, two different samples of grape juice have been inoculated with yeast. Air has been evacuated from sample I, but not from sample II. In which sample would you predict to the greater alcohol production?

A) Similar alcohol production is expected in both samples B) Sample II C) Sample I D) This cannot be predicted based on the information provided

Biology & Microbiology