A series of enzyme-mediated reactions by which cells build, remodel, or break down organic molecules is known as ____.

a. energy carriers
b. metabolic pathways
c. the induced-fit model
d. intermediary compounds
e. activation


Ans: b. metabolic pathways

Biology & Microbiology

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In a solution at pH 7.0, a polymer of lysine (polylysine) is a random coil with no secondary structure. In order for it to possibly assume an ?-helix structure, the pH of the solution must be:

A. 4 B 6 C. 8 D. 10 E. 12

Biology & Microbiology

The ____________ of a comet can be up to a million kilometers in diameter

Fill in the blank(s) with correct word

Biology & Microbiology

What type of mutation occurred in the following? Normal allele GGAAUGAAACAGGAACCC Mutant allele GGAAUGAAACAGGUACCC

A. substitution B. insertion C. deletion D. frameshift

Biology & Microbiology

Changes in the human species since the time of the first humans is an example of 

A. evolution. B. hydrolysis. C. life. D. metabolism.

Biology & Microbiology