In oxidation-reduction reactions, all of the
following are true EXCEPT
a. one molecule gives up electrons.
b. one molecule gains electrons.
c. cells release energy.
d. the molecule that accepts electrons is
oxidized.
e. hydrogen ions are usually released
D
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Place the following cell types in the correct order during the differentiation of a hematopoetic stem cell (HSC) into a macrophage. Some may be used once or not at all.
I. megakaryocyte II. lymphoid progenitor III. macrophage IV. hematopoetic progenitor V. myeloid progenitor VI. monocyte VII. hematopoetic stem cell A. VII, IV, V, VI, III B. IV, VII, V, VI, III C. IV, VII, II, VI, III D. VII, IV, V, II, III E. VII, IV, II, IV, III
Genetic manipulation has been useful in restoring the numbers of __________ in the United
States.
a. black-footed ferrets b. chestnut trees c. California condors d. Siberian tigers
There is evidence connecting excessive amounts of glutamate, an amino acid, with mental health conditions such as schizophrenia. If a patient were put on a diet severely limiting carbohydrates and glutamate, would it disrupt the body’s ability to perform cellular metabolism?
a. Yes. Glutamate is intrinsic to energy production during low carbohydrate conditions. b. No. Glutamate is not a contributing factor in nutrition and would not be missed for energy production. c. No. The body has many other amino acids that can be fed into the citric acid cycle to continue to make ATP. d. Yes. Glutamate is an essential amino acid required by the body that must be acquired from nutrition.
What is the ratio of phenotypes in the offspring produced by the cross Aa × Aa? Assume complete dominance for the trait
A) 75% dominant:25% recessive B) 50% dominant:50% recessive C) 25% dominant:75% recessive D) 100% dominance E) 100% recessive