A DNA copy of an mRNA molecule is called
A) dDNA.
B) rDNA.
C) mDNA.
D) shDNA.
E) cDNA.
E
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In describing the initiation and transmission of action potentials in neurons, it would be INCORRECT to say that
A. the rate of transmission of an action potential is directly related to the diameter of the axon. B. information about the intensity of a stimulus is conveyed by changes in the size of the action potential generated. C. the resting potential is maintained by differential ion permeabilities and the sodium-potassium pump. D. a stimulus to the neuron can either depolarize or hyperpolarize the neuronal membrane.
In magnesium-deficient plants the older leaves show more severe symptoms of chlorosis which is a yellowing of the leaves than younger leaves. What is the best explanation?
A. There is more time for the symptoms to develop in older leaves. B. Chlorophyll is transported from the older leaves to the younger leaves. C. Magnesium is more soluble in younger leaves. D. Scarce magnesium is removed from older leaves and translocated to support younger, more active leaves. E. Older leaves need less chlorophyll. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question containand what do they mean? Gather Content · What do you already know about the importance of magnesium in chlorophyll? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Construction of flagella and/or cilia is directed by the
A. basal body. B. axoneme. C. tubulin. D. centriole.
The double layered sac that surrounds the heart
and protects and anchors it is called the
a. peritoneum. b. perineum. c. pericardium. d. peristalsis. e. periwinkle