The ____ is a system of vesicles that wraps around each A band and I band
a. neuromuscular junction
b. Golgi apparatus
c. sheath
d. microvillus
e. sarcoplasmic reticulum
ANSWER: e
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Cancer cells ____
a. have normal plasma membranes. b. have an increased ability to attach to other cells. c. divide slowly to produce low densities of cells.
d. show an amplified reliance on ATP formation by fermentation. e. are all malignant.
How is it possible for an enzyme to lower the required energy of activation for a reaction? What will be an ideal response?
How many molecules of carbon dioxide (CO2) would be produced by five turns of the citric acid cycle?
A) 2 B) 5 C) 10 D) 12 E) 60
The results of the Lenski and Travisano experiment on cells in 12 replicate lines of E. coli illustrate the fact that:
a. evolution by natural selection is sometimes significantly affected by chance events such as random mutations and the order in which they happen. b. evolution by natural selection is often a predictable, repeatable process. c. A and B. d. Neither of the above.