Louis Pasteur demonstrated that fermentation to produce alcohol is caused by
A) aerobes.
B) facultative anaerobes.
C) obligate parasites.
D) archaea.
E) prokaryotes.
B
Bloom's Taxonomy: Knowledge
Section: The Golden Age of Microbiology
Learning Outcome: 1.6
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The MOST important potential common source of infectious disease is
A) industrial waste. B) arthropod reservoirs found near surface water supplies. C) water. D) human and animal wastes.
To see if a growth-promoting factor was released from blood platelets, cells called fibroblasts were placed in a dish containing liquid cell culture medium
The medium was supplemented with either serum (collected from blood that had been allowed to clot) or plasma from blood in which the platelets had not been activated during the clotting process. The number of cells in each culture is shown in the graph. Reference: Ref 9-2 How many cells are there on Day 3 in the culture that contains serum? A. 80,000 B. 800,000 C. 40,000 D. 400,000
Diatoms have both chorophyll a and chlorophyll ________.
Fill in the blank(s) with the appropriate word(s).
If the wild type DNA sequence reads THE CAT ATE THE BIG RAT, what type of mutation would change the sequence to THE CAT ATE THE BAG RAT?
A. insertion B. deletion C. silent D. missense E. nonsense