When the DNA of a bacterial phage is integrated into a host bacterial cell, that is called _________.

a) lysogenic
b) a prophage
c) attenuated
d) competent


Answer: b) a prophage

Biology & Microbiology

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A scientist performs an experiment in which they create an artificial cell with a selectively permeable membrane through which only water can pass. They inject a 5M solution of glucose into the cell and then place the cell into a beaker containing 10M glucose. What effect do you expect to observe?

A. Water moves out of the cell B. Glucose moves out of the cell C. No net change in cell weight D. Water moves into the cell E. Glucose moves into the cell

Biology & Microbiology

In specialized transduction, virtually any genetic marker can be transferred from donor to recipient

Indicate whether the statement is true or false.

Biology & Microbiology

The major difference between gram-positive and gram-negative bacteria is that:

a. the peptidoglycan layer in gram-positive bacteria is substantially thinner than in gram-negative bacteria. b. gram-positive bacteria contain a periplas-mic space, whereas gram-negative bacteria do not. c. flagella are only present in gram-positive bacteria. d. gram-negative bacteria contain an outer membrane that functions as the cell's ini-tial barrier to the environment.

Biology & Microbiology

Atherosclerosis ____

a. decreases arterial lumen size b. affects the diameter of veins c. has no effect on arterial lumen size d. increases arterial lumen size e. presents many clinical symptoms immediately

Biology & Microbiology