How many polypeptide chains comprise a hemoglobin molecule?
A) two
B) one
C) four
D) two or four
E) three
Ans: C) four
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Why do areas with high NPP typically have a high rate of nutrient cycling?
A) High amounts of productivity increase the number of decomposers. B) High amounts of productivity increase water production. C) High amounts of productivity cause low net mineralization rates. D) High amounts of productivity use low amounts of nutrients.
Which sentence best describes the process of competitive inhibition?
a. The inhibitor binds to and directly blocks the active site of the enzyme. b. The products of the reaction block the active site of the enzyme. c. The substrate and cofactors compete for the active site. d. The inhibitor binds to a site other than the active site of the enzyme and blocks enzyme activity indirectly.
A physician sees a new patient who is 25 years old. The patient reports that she has been experiencing recurrent ear, nose, and throat problems resulting from various infections since she was about 5 years old. The infections last for long periods of
time and are difficult to treat. The physician suspects that the patient may have A) an autoimmune disorder. B) an allergic reaction. C) an immunodeficiency disorder. D) abnormal levels of allergens.
Huntington's observations of the disease that later took his name were published prior to the rediscovery of Gregor Mendel's work on inheritance. Support the argument that Huntington was describing a phenotype with complete dominance
What will be an ideal response?