Which of the following is not secreted by glands?
A. Mucin
B. Hormones
C. DNA
D. Enzymes
E. Waste products
C
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In response to respiratory alkalosis, the
A) respiratory rate increases. B) tidal volume increases. C) kidneys conserve bicarbonate. D) kidneys secrete more hydrogen ions. E) kidneys retain more hydrogen ions.
Cells can remodel their membranes to preserve fluidity in a process known as __________ adaptation
Fill in the blank with the correct word.
What kind of junctions are impermeable junctions that join the lateral edges of epithelial cells near their luminal borders, thus preventing movement of materials between the cells?
a. gap junctions b. desmosomes c. luminal junctions d. plasma junctions e. tight junctions
Which of the following statements about the citric acid cycle is false?
A. At several steps, NADH molecules are formed. B. The major end product of the cycle is lactate. C. Two ATP are formed in the cycle from one glucose. D. The process occurs in the mitochondria. E. Carbon dioxide is produced at several steps in the cycle.