The graph below shows the rate of transport for each substance when the cells are placed in 0.10 mM solutions of A, B, and C. Based on these data and coupled with the data observed above, substance C is transported via ________.
A) active transport
B) facilitated transport
C) passive transport
D) simple diffusion
E) choices A, B, and C
A) active transport
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Fire in the dry shrublands does not kill the small bushy plants most probably because ____
a. these plants have a tough protective bark b. their leaves are typically inflammable c. they can resprout from roots d. the Forest Service puts the fires out quickly e. the tall trees provide canopy cover keeping the ground moist
Tissues derived from mesoderm are absent in
a. sponges. b. cnidarians. c. flatworms. d. sponges and cnidarians. e. sponges, cnidarians, and flatworms.
The exchange of gases between an organism and its environment is known as:
a. exhalation. b. aeration. c. inhalation. d. respiration. e. ventilation
Some people trying to lose weight have gone on the Atkins diet, in which they eat mostly high-protein, low-carbohydrate foods such as meat, cheese, and eggs
The amino acids in these protein-rich diets, such as alanine, glycine, and serine, can be converted to pyruvate by deamination (removal of the amino group). Based on this scenario as well as your knowledge of cellular respiration, how many ATP, NADH, and FADH2 molecules will be generated from one molecule of alanine during the mitochondrial matrix reactions? Hint: Only consider the reactions from the point at which the alanine carbons enter cellular respiration. A) 2 FADH2, 6 NADH, and 2 ATP B) 1 FADH2, 1 NADH, and 1 ATP C) 2 FADH2, 3 NADH, and 2 ATP D) 0 FADH2, 1 NADH, and 2 ATP E) 1 FADH2, 4 NADH, and 1 ATP