Why do scientists carefully describe all detail of an experiment?
A. Because their hypotheses are always being changed
B. Because the experiment can run by itself
C. Because they don't take pictures of it.
D. Because they can repeat the experiments to compare results
E. Because they have bad memories
F. None of above
Answer: D. Because they can repeat the experiments to compare results
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The same researcher discovers that one patient has an abnormally high level of IgE immunoglobulin. He goes back to check the patient's chart. What are the likely symptoms of this patient? Select all correct choices
A. persistent infections of the mucous membranes B. persistent viral infections C. severe allergies D. severe asthma
A species that has a disproportionately large effect on a community is called a ____ species
Fill in the blank with the appropriate word.
The observed "puffs" in the polytene chromosomes of Drosophila are sites of
A) attenuation. B) condensation. C) induction. D) transcription. E) translation.
Identify the chemoreceptor(s) important for detecting possible toxic substances.
A. salty B. sweet C. sour D. bitter E. salty and sweet