Phage typing

A. is useful for determining eukaryotic cell types.
B. is used to extract DNA from cells.
C. is used to distinguish bacterial strains.
D. is dependent on the type of eukaryotic cell.
E. is used to distinguish bacterial strains AND is dependent on the type of eukaryotic cell.


C

Biology & Microbiology

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Solution A has a pH of 6 and solution B has a pH of 8. Which of the following is true regarding the

concentration of hydrogen ions in each solution?

a. A has 100 times greater H+ concentration than B. b. B has 100 times greater H+ concentration than A. c. A has 7/9 of the H+ concentration of B. d. A has 9/7 of the H+ concentration of B. e. A has 1,000 times greater H+ concentration than B.

Biology & Microbiology

Rarely, a chromosome’s structure becomes altered

when part of it undergoes __________, __________, __________, or __________. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

In scanning electron microscopy, an electron beam passes through a very thin slice of a specimen and then falls onto a

photographic plate or a fluorescent screen. Indicate whether the statement is true or false.

Biology & Microbiology

Which groups contain both unicellular and multicellar members?

A. Bacteria B. Fungi C. Protists D. Animals E. Both B and D F. Both C and D G. Both B and C

Biology & Microbiology