A heart rate above 100 beats per minute is known as ____

a. bradycardia
b. arrhythmia
c. tachycardia
d. atrial fibrillation
e. ventricular fibrillation


ANSWER: c

Biology & Microbiology

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The higher order structure of chromatin contains topologically constrained loops. What would happen if a single loop was cleaved?

A. The entire chromosome would unravel. B. The genes of that loop could not be transcribed. C. Only that loop would relax because each loop is separately constrained by proteins. D. The genes in the cleaved loop could not be replicated. E. Supercoiling in the cleaved loop would not be affected.

Biology & Microbiology

Complement-mediated lysis is achieved by

A. entry of lysozyme into Gram-positive bacteria and entry of lysozyme into Gram-negative bacteria. B. entry of lysozyme into Gram-negative bacteria. C. entry of lysozyme into Gram-positive bacteria. D. None of the choices are correct.

Biology & Microbiology

The active site of an enzyme ____.

A. is where the coenzyme is located B. is a specific bulge or protuberance on an enzyme C. is a groove or crevice in the structure of the enzyme complementary to the substrate D. will react with only one substrate no matter how many molecules may resemble the shape of the substrate E. rigidly resists any alteration of its shape

Biology & Microbiology

Which is false about submissions?:

-documents can be submitted in Word format -documents can be submitted in PDF format -documents can be submitted in Pages -documents should include the original questions, but the answers should be highlighted

Biology & Microbiology