Which enzyme speeds up the formation of carbonic acid from carbon dioxide and water?
A) cyclo-oxygenase B) carbonic anhydrase
C) hydrogenase D) carboxylase
Answer: B
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Which of these statements is true?
a. Transport through carrier proteins occurs more rapidly than through channel proteins. b. Osmosis transports vitamins and nutrients through a cell’s plasma membrane. c. Aquaporins facilitate the transport of water through a cell’s plasma membrane. d. Ions pass through channel proteins by bonding to the protein’s inner surface.
In triploblastic organisms, the inner layer of cells forms the muscles of the body wall
1.True 2.False
Name the innate defense that involves vasodilation and increased vascular permeability, resulting in the influx of blood, blood cells, and fluid to an area of injury or infection.
A. Inflammation B. Complement activation C. Activation of mononuclear phagocytic system D. Activation of NK cells
Which of the following is thought to be the FIRST group of organisms able to use water as an electron donor in photosynthesis?
A. land plants B. cyanobacteria C. algae D. aquatic plants