The calcium ions released into the cytosol during excitation of skeletal muscle bind to _____

A) troponin complex
B) transverse tubules
C) actin
D) myosin


Answer: A

Biology & Microbiology

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Scientists speculate that extinctions did not occur in Africa as they did on other continents because animals coevolved with _______ in Africa.  

A.  plants B.  diseases C.  parasites D.  humans

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In order to add a single amino acid to a growing polypeptide chain, a grand total of ________ molecules or ATP or GTP are utilized.

A. four B. two C. three D. six

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Which of the following is NOT true about IgG type antibodies?

a. It is the most common/abundant type of antibody in the blood b. It is the most common/abundant type of antibody in body secretions c. It can cross the placenta and protect the fetus. d. It is the longest lasting type of antibody produced.

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Explain how blood glucose is kept constant through the actions of hormones.

What will be an ideal response?

Biology & Microbiology