What is the first step in the scientific method?
a. Evaluate the results
b. Testing the hypothesis.
c. Making a prediction based upon the hypothesis.
d. Run the experiment.
e. Forming a hypothesis.
e
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Erection occurs when
A. the spongy erectile tissue of the penis becomes engorged with blood. B. the veins flowing out of the penis vasoconstrict. C. the arteries of the penis vasodilate. D. nitric oxide is released. E. All of these events occur to promote an erection.
Which of the following is considered a tetrapod?
a. parrot b. earthworm c. goldfish d. sponge
The mutualistic fungi that can live within the roots of certain plants are called ________
Fill in the blank(s) with correct word
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. Defects in anterior-posterior patterning B. Migration into the wrong area C. Homeotic transformation D. Apoptosis