Question

1) Koch’s postulates

a. must be followed to prevent infectious disease

b. are steps that must be followed to determine the cause of an infectious disease

c. provide guidelines to prevent acids from being produced during wine making

d. were used by Robert Koch in developing vaccines

2) The algal blooms that occur in Lake Erie and other bodies of water are primarily caused by

a. Global warming

b. Fertilizer run off from agricultural fields and residential areas

c. Industrial pollution

d. The extinction of aquatic species

e. None of the above

3) Which of the following statements about phospholipids is true?

a. are composed molecules that are entirely hydrophilic

b. are composed molecules that are entirely hydrophobic

c. are the principle components of cell membranes 2/6/18 9

d. have “heads” and “tails” that both have phosphate groups

4) The generation time of a particular bacterial species is 30 minutes. Starting with one cell, how many are there after 4 hours?

a. 4 b. 8 c. 256 d. none of the above

5) Generation time can best be defined as

a. the length of time it takes for lag phase

b. the duration of log phase

c. the time it takes for a cell to divide

d. how many generations a cell can divide

6)Most bacteria reproduce by

a. aerial hyphae b. fragmentation c. mitosis d. binary fission e. budding

Answer 1

1) Koch’s postulates: b. are steps that must be followed to determine the cause of an infectious disease
2) The algal blooms that occur in Lake Erie and other bodies of water are primarily caused by: b. Fertilizer run off from agricultural fields and residential areas
3) Which of the following statements about phospholipids is true: c. are the principle components of cell membranes
4) The generation time of a particular bacterial species is 30 minutes. Starting with one cell, how many are there after 4 hours: c. 256
5) Generation time can best be defined as: c. the time it takes for a cell to divide
6) Most bacteria reproduce by: d. binary fission