Humans are in the mammal group known as ________
Fill in the blank(s) with correct word
primates
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The Emerson enhancement effect
A) was proposed by Robert Emerson in the 1980s. B) states that there are three or four separate photoreactions. C) is a synergistic phenomenon. D) is the result of two distinct photosystems. E) both choices C and D
If an organism produces abnormally high levels of leptin, predict what would happen to that organism's weight, and explain why the change would occur.
A. Weight gain would occur as a result of increased fat storage. B. Weight gain would occur as a result of increased appetite. C. Weight loss would occur as a result of increased metabolic activity and reduced fat storage. D. Weight loss would occur as a result of decreased digestive enzyme production. E. Weight loss would occur as a result of decreased appetite.
The function of erythropoietin is
a) reabsorption of sodium ions b) excretion of potassium ions c) reabsorption of water d) to stimulate red blood cell production e) to increase blood pressure
All microorganisms are best defined as organisms that
A. cause human disease. B. lack a cell nucleus. C. are infectious particles. D. can only be found growing in laboratories. E. are too small to be seen with the unaided eye.