Which of the following is an undesirable contaminant in wine-making?
A) Acetobacter
B) lactic acid bacteria
C) Clostridium botulinum endospores
D) Saccharomyces
A
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The "thermal death point" is the lowest temperature required to kill all microbes in a sample in 10 minutes.
a. true b. false
If an enzyme consists of a protein component and a nonprotein component, the protein component is referred as the ________.
A. holoenzyme B. apoenzyme C. prosthetic group D. coenzyme
Stomato allows plants to ____________.
a. reproduce b. diffuse gas and water c. attach to the soil
Which of the following is true of both T cells and B cells?
A. They are effector cells against specific pathogens. B. They are produced from stem cells of the bone marrow. C. They can help attack and destroy invading pathogens. D. They typically have a short life span. E. All of these statements are true.