A muscle contraction that results from a single action potential is known as:
A. a twitch.
B. tetanus.
C. isometric contraction.
D. threshold potential.
A
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You have discovered a new gene similar to an integrin. If you misexpress this gene in the wrong tissue early in development, what is a likely phenotype?
A. migration into the wrong area B. apoptosis C. homeotic transformation D. defects in anterior-posterior patterning Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about integrins? Consider Possibilities · Consider the different answer options. Which can you rule out? 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?
A repair enzyme recognizes an incorrect structure in the DNA and directly converts it back to a correct structure. Which of the following DNA repair systems is responsible for the correction?
A. base excision repair B. direct repair C. indirect repair D. nucleotide excision repair E. methyl-directed mismatch repair
One square meter of open ocean areas supports more phytoplankton growth than a comparable coastal water area
Indicate whether the statement is true or false
The forked line and probability methods make use of what probability rule?
A. test cross B. product rule C. monohybrid rule D. sum rule