In a stimulated muscle fiber, the calcium ions released by the sarcoplasmic reticulum bind to the protein ________.
A. actin
B. troponin
C. myosin
D. tropomyosin
Answer: B
Biology & Microbiology
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Starch is the primary storage food for all of the following except ________.
A. green plants B. algae C. some fungi D. animals
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Four of the five drugs listed below are stimulants
Select the exception. a. heroin b. caffeine c. nicotine d. cocaine e. amphetamine
Biology & Microbiology
The enzyme that joins the ends of newly synthesized segments of DNA after the primers have been removed is
A. helicase. B. DNA ligase. C. RNA ligase. D. DNA polymerase. E. primase.
Biology & Microbiology