Which type of molecule was the 32P used to label in the Hershey Chase experiment?

a. a DNA molecule
b. a protein molecule
c. a RNA molecule
d. a phospholipid molecule


Ans: a. a DNA molecule

Biology & Microbiology

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A. salty B. sweet C. sour D. bitter E. salty and sweet

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Which structure prevents blood flowing back into the heart from the aorta between heartbeats?

A. semilunar valve B. atrioventricular valve C. tricuspid valve D. mitral valve E. ductus arteriosus

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Paraoxon is a toxic compound that disrupts the transmission of signals in the ____________________ system and can cause headaches, blurred vision, tremors, unconsciousness, and death by ____________________ arrest

Fill in the blank(s) with correct word

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A chromosome whose centromere is close to the end of the chromosome is called _______

A. submetacentric D. mesocentric B. metacentric E. pericentric C. acrocentric

Biology & Microbiology