The pancreas is an important accessory organ of the digestive system because it adds all of the following substances to the small intestine except
A. DNase, RNase.
B. lactase.
C. trypsin, chymotrypsin.
D. bicarbonate.
E. lipase.
B. lactase.
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Two solutions of differing glucose concentration are placed in a container separated by a selectively permeable
membrane that restricts large molecules like glucose, but allows the free diffusion of water. What will be the glucose concentration in the container after dynamic equilibrium has been reached?
a. The water molecules will be evenly distributed in the container, with more glucose molecules on one side than the other. b. The volumes of the solution will be different, with a higher volume on the side that originally contained the higher concentration of glucose. c. The volumes of the solution will be different, with a lower volume on the side that originally contained the higher concentration of glucose. d. The glucose concentration of the two solutions will be identical on both sides of the membrane, but the volumes will remain unchanged. e. The volume and concentrations will be unchanged on both sides of the membrane.
In a urine test, what may indicate damaged kidneys?
a. urine high in proteins b. high sugar content c. acidic urine d. alkaline urine e. chemicals present in urine
Muscle contraction is an example of which of the following types of work?
A) heat B) mechanical C) bioluminescent D) electrical E) concentration
Leaf abscission:a
occurs as a response to increased temperatures in temperate climates. b. occurs as a response to dry conditions in tropical climates. c. involves the formation of a tendril at the base of the petiole. d. occurs year-round on deciduous plants. e. does not occur in conifers