What do lysosomes contain?
A) metabolic enzymes that produce energy for the cell
B) genetic blueprint for the cell
C) ribosomes for protein production
D) digestive enzymes
E) actin proteins
Answer: D
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If a lever has a fulcrum at one end, a tendon exerting force 5 cm distal to the fulcrum, and resistance at the end opposite to the fulcrum, which of the following is true?
A. It is a third-class lever. B. It is a first-class lever. C. The mechanical advantage is higher than 1.0. D. The point of effort will move farther than the point of resistance. E. This joint would use "low-gear" muscles.
The movement of molecules against their concentration gradient is called ________.
A. facilitated diffusion B. active transport C. diffusion D. endocytosis E. osmosis
An equivalent term for epicardium is
A) parietal pericardium. B) myocardium. C) endocardium. D) visceral pericardium. E) None of the answers is correct.
What type of muscle tissue causes vasoconstriction?
A. skeletal muscle B. smooth muscle C. cardiac muscle