Females who start smoking as teenagers are ________% more likely to develop breast cancer
a. 35
b. 70
c. 20
d. 100
e. 55
b
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The enzyme associated with the influenza virus that hydrolyzes the protective mucous coating of the respiratory tract is
A. neuraminidase. B. kinase. C. reverse transcriptase. D. catalase. E. hyaluronidase.
Birds excrete their nitrogenous wastes in the form of
A) uric acid. B) ammonia. C) amine groups. D) urea. E) amino acids.
Since O2/H2O is the most electropositive couple, ________ energy is available from ________ than from ________
a. more / fermentation / aerobic respiration b. more / aerobic respiration / anaerobic respiration c. less / anaerobic respiration / aerobic respiration d. less / aerobic respiration / fermentation
An increase in generation time with increasing body size is least likely in ____
a. bacteria b. plants c. animals d. protists e. fungi