A protein, like the lac repressor, is said to be ________ because when it binds lactose, it structurally changes and its chemical activity also changes
A) digestive B) allosteric C) structural D) enzymatic E) multimeric
Answer: B
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According to your text, the gap in per capita gross national income between the world's 10 most and least prosperous countries is closing, from 70 times to only 20 times as great
Indicate whether this statement is true or false.
Steriod hormones are effector molecules
Indicate whether the statement is true or false
ATP serves as a common energy source for organisms because
(A) it is the smallest energy molecule (B) it stores the least energy of any energy source (C) its energy can be easily transferred to do cellular work (D) it is extremely stable and can be stored in the cell for long periods of time (E) traces of it have been found in fossils of ancient organisms dating back to the beginning of life on Earth
Which of the following is a microbial product used to reduce crop damage?
A) Bt toxin B) saxitoxin C) ice-minus D) both Bt toxin and ice-minus E) both Bt toxin and saxitoxin