In the liver, carbon dioxide and ammonia are combined to form the less toxic waste product ____
a. urea
b. water
c. creatine
d. sulfuric acid
e. phosphoric acid
ANSWER: a
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In human development, cell rearrangement within the ball of cells (morula) leads to a hollow sphere with a "mound" of cells at one pole. This group of cells is called the:
A. mesoderm. B. blastocyst. C. neural plate. D. inner cell mass. E. gastrula.
Rubisco has 16 subunits joined together to make a functional unit. Eight of the subunits are large, the other 8 are
small. On which subunit(s) is/are the active sites located?
a. on each of the 8 large subunitsb. on each of the 8 small subunits c. on one of the 8 large subunits d. on one of the 8 small subunits e. on each of the 16 subunits
The maximum life expectancy for a patient with cystic fibrosis is approximately
a. 15 years. b. 20 years. c. 25 years. d. 30 years. e. 50 years.
The iron in a hemoglobin molecule is actually what binds the oxygen.
Answer the following statement true (T) or false (F)