What reaction does the enzyme alcohol dehydrogenase catalyze?
a. ethanol to acetate
b. ethanol to acetaldehyde
c. acetate to acetaldehyde
d. acetaldehyde to ethanol
e. acetaldehyde to acetate
ANSWER: b
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Which of the following descriptions illustrates phenotype variation caused by environment?
A) inheritance of body builder "physique" B) diet of caterpillars changes their morphology C) variation in horse coat color D) average beak depth during drought
A gram-negative, nonsporulating rod that is highly motile, oxidase negative, facultatively aerobic, ferments glucose, and urease-positive is likely to be of which genus?
A) Pseudomonas B) Proteus C) Lactobacillus D) Rickettsia
Briefly explain the iron-sulfur world hypothesis and identify two pieces of evidence that support this hypothesis. What will be an ideal response?
During parturition, the process of the uterus moving up towards the baby's head is called ____________
Fill in the blank(s) with the appropriate word.