Which of the following statements is NOT true of cephalopods?
A. Some are very large and can weigh as much as two tons.
B. Some are very intelligent and are good learners.
C. Some have shells and some do not.
D. They are predatory.
E. They have an open circulatory system.
E. They have an open circulatory system.
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________ bind two or more ions or molecules and transport them in opposite directions across a membrane.
A. Uniporters B. Symporters C. Antiporters D. Dual transporters E. Channel pumps
What subunits make up the DNA polymer?
a. ribose combined with one of the four bases A, T, G, or C b. deoxyribose combined with one of the four bases A, T, G, or C c. amine groups combined with sugar-phosphate groups d. amine groups combined with one of the four bases A, T, G, or C
The amount of turgor that is enough to stop
osmosis is called
a. the wilting point. b. osmotic pressure. c. hypotonicity. d. expansion pressure. e. hypertonicity
When one muscle group is stimulated, no nervous signals are sent to the opposing group. This is the
result of a. reciprocal innervation. b. lack of innervation. c. hyperreflexia. d. compensation. e. depolarization.