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Answer & Explanation:Question 1Select one answer. 10 pointsWhich of the following regulatory mechanisms is described incorrectly? feedback inhibition: product inhibits its own production competitive inhibitor: binds to the active site of the enzyme enzyme modification: enzyme gains or loses a functional group substrate availability: more substrate increases enzyme activity (until it reaches saturation) All are correctQuestion 2Select one answer. 10 pointsWhat is the connection between a person’s genes and his or her metabolism? structural proteins encoded by genes regulate metabolic pathways enzymes encoded by genes regulate metabolic pathways DNA regulates metabolic pathways directlyQuestion 3Select one answer. 10 pointsThe fundamental difference between competitive and non-competitive inhibition is: _________________________ the size of the active site of the enzyme. the manner of binding of the inhibitor to the enzyme. the manner of binding of the substrate to the enzyme.Question 4Select one answer. 10 pointsHow does the body react to rapid weight loss? Hunger increases and the metabolic rate goes down. Hunger decreases and the metabolic rate goes up. Hunger increases and the metabolic rate goes up.Question 5Select one answer. 10 points Cells or organisms tend to maintain steady internal conditions. What is the name for this property and ability of life? Adaptation Reproduction Homeostasis MetabolismQuestion 6Select one answer. 10 pointsEnergy is stored in different forms in the body. ATP is very unstable and is put to use very quickly in cells. Other storage

molecules last longer. Which gives the major energy stores of the body in the correct order? Short term: glucose. Medium term: glycogen. Long term: fat. Short term: fat. Medium term: glycogen. Long term: glucose. Short term: glycogen. Medium term: glucose. Long term: fat.Question 7Select one answer. 10 pointsWhich best describes body weight regulation in a normal human who is living in a modern society? Our normal responses of appetite and metabolism ensure that adults remain at a given normal body weight. Any change from this normal weight sets in motion responses that return the body to its normal weight. Our normal responses of appetite and metabolism tend to cause weight gain in modern societies, and they also tend to make weight loss difficult.Question 8Select one answer. 10 pointsWhich of the graphs in the figure best illustrates the activity of an enzyme as substrate concentration increases from 0 to the saturation point of the enzyme?Question 9Select one answer. 10 pointsWhat would be a typical regulatory system in a metabolic pathway? The pathway’s product makes it go faster, so that more and more of the product builds up in the cell or body. The pathway’s product slows it down, so that the product is maintained at a constant level in the cell or organism.Question 10Select one answer. 10 pointsIn a metabolic pathway, a typical control mechanism is to have: ________ a lack of reactant stimulate the pathway. the final product inhibit an early step. the final product inhibit the enzyme responsible for its own production. a reactant inhibit a late step.