The shape of a protein is determined by the order of amino acids, if you change that order the protein can still function properly even though the shape has changed.
a. true
b. false
Answer: b. false
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Yeast is used to produce beer and wine but can also make bread rise. All of these processes involve the production of alcohol. Explain why you can eat bread and not get drunk.
A. The bread-making process produces ethyl alcohol, not isopropyl alcohol. B. The amount of alcohol produced is too small to be noticeable. C. The heat of cooking bakes out the alcohol. D. The bread-making process produces isopropyl alcohol, not ethyl alcohol.
The structure indicated in the figure above is:
A. only found circulating in the blood. B. attached to B cells at the plasma membrane. C. contained in the lysosome of B cells. D. found on all types of leukocytes. E. contained in the lysosome of all types of leukocytes.
Which of the following molecules did the first
life on earth more likely use for extracting energy and carbon?
a. oxygen b. ATP c. NADPH d. water e. methane
Most of the normal microbiota of the digestive system are found in the
A) mouth. B) stomach. C) stomach and small intestine. D) small intestine and large intestine. E) accessory structures.