Francesco Redi performed the following experiment. He had two different sets of containers with meat in them. One set of containers was covered with a material that let air pass through and the other set was left uncovered. The uncovered containers developed maggots and the covered ones did not. Which one of the following hypotheses could not be tested by this experiment?
A. Maggots come from within the meat.
B. Maggots are introduced to the meat from some outside source.
C. Only living things can give rise to other living things.
D. Air is necessary for living things to be produced.
D. Air is necessary for living things to be produced.
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In Engelmann's 1882 experiment, why did bacteria cluster in red or blue wavelengths of light?
a. The bacteria used those wavelengths to photosynthesize. b. Algae photosynthesized best at those wavelengths, producing needed oxygen. c. The bacteria produced oxygen most efficiently using red and blue light. d. Algae photosynthesized best at those wavelengths, producing needed carbon dioxide. e. The bacteria were attracted to bright light.
The type of tissue that makes up the sweat glands, salivary glands, and endocrine glands is ________
Fill in the blank(s) with correct word
Select the best response to the question. ? ?Which of the following patients presenting with diarrhea is at high risk of having ?Clostridium difficile ?colitis?
A) a patient who ate contaminated food B) a patient taking antibiotics for pneumonia C) a patient who recently traveled to South America D) a patient taking high doses of anti-inflammatory medications
G. H. Hardy and R. Punnett were two of the founders of which biological field of study?
a. quantitative genetics b. qualitative genetics c. population genetics d. molecular genetics e. None of the above