When an enzyme catalyzes a chemical reaction, ________.
A. the enzyme binds to the substrate's active site
B. amino acids in the enzyme's active site interact with substrate molecules to create a product
C. amino acids in the substrate allow for interaction with the product
D. the enzyme's active site binds to the product
Answer: B
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An atom with a positive or negative charge is known as a(n) ________
Fill in the blank with correct word.
Correctly match the term and definition: Endocytosis of a tiny quantity of extracellular fluid containing solute molecules.
A)Pinocytosis B)Phagocytosis C)Osmosis D)Receptor-mediated endocytosis
A procedure in which a length of the patient's vein or artery is used to create a detour around an obstruction in a coronary artery is called
A) balloon angioplasty. B) coronary artery bypass graft. C) intravenous catheterization. D) ablation. E) atherectomy.
Which of the following is NOT a contribution of the cardiovascular system to other body systems?
a) Blood delivers clotting factors and WBCs that aid in hemostasis when skin is damaged. b) Blood delivers calcium and phosphate ions that are needed for building bone extracellular matrix. c) Blood carries carbon dioxide to body tissues and removes oxygen for use by other organs. d) Blood carries newly absorbed nutrients and water to the liver. e) Blood circulates cells and chemicals that carry out immune functions.