Lactic acid bacteria
A. consume lactic acid, allowing them to grow on foods such as yogurt.
B. produce lactic acid, allowing them to produce foods such as yogurt.
C. are important spoilage organisms.
D. can grow on lemons.
E. produce lactic acid, allowing them to produce foods such as yogurt AND are important spoilage organisms.
E. produce lactic acid, allowing them to produce
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A somatic mutation
A) occurs only in microbes. B) affects a particular subset of cells. C) affects all cells of an individual. D) is expressed only in embryos.
What charge will the hydrogen have in a water molecule?
a. Strongly negative b. Slightly negative c. Neutral d. Slightly positive e. Strongly positive
Characterize the frequency of changes in chromosome number in humans
A. Close to half of all conceptions are aneuploid. B. They are a major cause of reproductive failure. C. The frequency is significantly higher than it is in closely-related animals. D. All of these. E. None of these.
The _______ us the portion of the brain most closely associated with memory and language.
A. thalamus B. brain stem C. cerebrum D. cerebellum