All molecules and ions are in continuous random motion at temperatures above absolute zero as a result of thermal (heat) energy
a. True
b. False
Indicate whether the statement is true or false
True
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What is a coenzyme?
A. A metal, such as zinc, that participates in enzymatic reactions B. Any ligand that binds to a specific site on a protein receptor C. An inorganic molecule that catalyzes enzymatic reactions D. A term regarding enzymatic reactions that is synonymous with "cofactor" E. An organic cofactor that directly participates as one of the substrates in an enzymatic reaction
Which of the following is NOT an effect of aging with the heart?
A. Resting heart rate increases B. Contraction strength decreases C. Valves thicken and become more rigid D. Heart increases in size
Using Figure 8.1, match the following:
1) Periosteum. 2) Articular cartilage. 3) Joint (synovial) cavity. 4) Synovial membrane. 5) Fibrous capsule.
Myelin is rich in ___________
A) salts B) lipids C) carbohydrates D) nucleic acids