Alcoholic fermentation requires __________ and is an __________ type of reaction
a. oxygen; aerobic
b. oxygen; anaerobic
c. sugar; aerobic
d. sugar; anaerobic
D
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The part of a membrane protein that extends through the phospholipid bilayer is primarily composed of amino acids that are
A. highly polar. B. negatively charged. C. non-polar. D. positively charged. E. water soluble.
Natural selection that increases the frequency of a favorable allele is called _____
A. positive selection B. balancing selection C. sexual selection
Which of the following have no nuclei?
a. platelets b. leukocytes c. erythrocytes d. platelets and erythrocytes e. leukocytes and erythrocytes
Which one of the following occurs when a phosphate is removed from an ATP molecule?
A) Energy is added to the ATP molecule to form ADP. B) Oxygen produced in the reaction causes the molecule to explode. C) Energy is released for cell work. D) Chemical reactions stop in a cell due to lack of an energy source. E) Fat is converted to protein.