The ____ is a channel for urine to flow from a
kidney to the urinary bladder. It is labeled as
____ on the above diagram.
a. urethra; B
b. urethra; D
c. ureter; D
d. ureter; B
e. ureter; C
D
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The broad base at the primary producer level in a trophic pyramid is due to all of the following except:
A. the greatest availability of energy. B. the greatest amount of biomass. C. the relatively higher number of primary producers compared with organisms at other levels. D. the amount of oxygen given off at this level. E. the larger body size of primary producers compared with organisms at other levels.
The first enzyme in glycolysis is hexokinase. What does it do?
a. Hexokinase facilitates diffusion of glucose through the cell membrane. b. Hexokinase moves glucose into the mitochondria to initiate glycolysis. c. Hexokinase catalyzes the phosphorylation of glucose to produce glucose-6-phosphate. d. Hexokinase destabilizes fructose-1,6-biphosphate to prepare it for cleavage.
The number of parasites per individual is relatively high in most individuals and low in a few individuals
Indicate whether the statement is true or false
Which of the following techniques involves the preparation of a karyotype?
A) amniocentesis B) chorionic villus sampling C) fetoscopy D) A and B only E) A, B, and C