The digestive enzyme pepsin works in the acidic environment of the stomach to hydrolyze peptide bonds. As a result, pepsin affects which macromolecule?
A. protein
B. lipid
C. carbohydrate
D. DNA
Answer: A
Biology & Microbiology
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Primary production is generally highest in
A. tundra. B. desert. C. wetlands. D. tropical rain forests. E. tropical oceans.
Biology & Microbiology
Answer the question using the accompanying figure. The oceanic zone is represented by letter ____
a. A b. B c. C d. D e. E
Biology & Microbiology
Which of the following catalyzes the unwinding of the DNA double helix during DNA replication?
a. topoisomerase b. primase c. DNA polymerase d. helicase e. DNA ligase
Biology & Microbiology
Neurons of the somatic nervous system relay:
a. commands to skeletal muscles b. information from the internal environment to the central nervous system c. signals to smooth and cardiac muscles d. signals to adjust digestion e. signals to adjust the breathing rate
Biology & Microbiology