The first step of the scientific method is to ____
a. perform an experiment
b. make a prediction
c. test a prediction
d. analyze data
e. observation of a natural event
ANSWER: e
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According to the above figure, which letter corresponds to the area where amino acids are most likely to be reabsorbed?
A. A
B. B
C. C
D. D
E. E
A person with a glucagon deficiency would most likely have difficulty
a. producing enough urine to remove waste products. b. synthesizing glycogen in the liver. c. allowing circulating glucose to enter cells. d. producing insulin after a meal. e. keeping up blood sugar between meals.
A female exhibits two major approaches in choosing a mate, selecting either the phenotypic characteristics of the mate or the
A) number of other females the male has in his harem. B) ability of the male to provide resources. C) number of offspring the male has previously produced. D) age of the male.
Animal fats and plant oils are sometimes used as sources of fuel for automobile engines. How is energy harvested from these molecules?
a. They contain hydrogen and carbon tails linked by disulfide bridges that, when broken, release chemical energy. b. They contain long chains of hydrogen and carbon that, when broken, release the energy stored in the bonds linking the atoms together. c. They contain long carbon tails and each atom has unpaired electrons that are released on exposure to extreme heat and pressure. d. They contain long hydrophobic regions that, when mixed with water, generate explosive resistances. e. They contain multiple phosphate groups that each release energy when "liberated" from the molecule chemically.