In mammals, blood with a low oxygen content enters the ________ of the heart
A) right atrium
B) right ventricle
C) left atrium
D) aorta
E) left ventricle
A
Biology & Microbiology
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An enzyme that cleaves internal phosphodiester bonds of a DNA molecule is a (n)
A. ligase. B. exonuclease. C. methylase. D. endonuclease.
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The connection between a particular organism and a specific disease was first made by
A. Jenner. B. Pasteur. C. Koch. D. Leeuwenhoek.
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As of 2014, a new clinical study in the United States is testing whether cells derived from IPSCs can reverse ____
a. spinal cord injuries b. Parkinson's disease c. muscular dystrophy d. heart attacks e. blindness
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Which of the following is part of the lateral
meristem? a. cork cambium b. procambium c. protoderm d. ground meristem e. all of these
Biology & Microbiology