In which of the following ways are the nervous and endocrine systems similar?
A. Both contain cells that carry impulses.
B. Both secrete molecules that attach to other cells.
C. Both typically are fast acting.
D. Both typically use the circulatory system to transport molecules.
B. Both secrete molecules that attach to other cells.
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In Frederic Clements' view, succession proceeds to an end point called a(n)
A. S1. B. S2. C. pioneer community. D. climax community. E. None of these choices are correct.
Which of the following do yeast produce during fermentation?
A. Glucose. B. Pyruvate. C. Ethanol. D. Lactate. E. NADH.
Biodegradation of oil in soil is difficult due to a lack of ________, which is very expensive to introduce into the sediments.
A. phosphorous B. carbon C. nitrogen D. oxygen
Fats should account for approximately ____ of calories in a balanced diet.
a. 40 to 50 percent b. 10 to 15 percent c. 55 to 65 percent d. 25 to 30 percent