Question 9 The majority of energy produced within the body is released as Heat energy ATP Chemical energy Carbohydrates Mechanical energy 10 pts
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Many human enzymes work best near pH 7. This graph shows the activity of three enzymes. Which of the following is true? Sucrase might be found in the acidic environment of the stomach due to its activity at pH 2. Trypsin might be found in the acidic environment of the stomach due to its activity at pH 2. Pepsin might be found in the acidic environment of the stomach due to its activity at pH 2. None of these statements are true according to the graph. QUESTION 2 Where is the chemical energy stored in this molecule of adenosine triphosphate? in the hydroxyl groups that react to release energy in the multiple N atoms that attract each other In the phosphate groups that can be removed in the ribose structure unstable as a ring QUESTION 3 An enzyme catalyzes a reaction in a way that results in a lower activation energy. What is the significance of a lower activation energy? It increases the overall cellular energy expenditure. It increases the rate at which enzymes are consumed. It increases the rate of a cellular reaction. It slows the rate of products formed. QUESTION 4 Enzymes lower the activation energy of a reaction. QUESTION 5 Most enzymes are proteins. Which one of the following statements is correct? Human enzymes function best at temperatures above 110 degrees Fahrenheit. Human enzyme structures are carbohydrates. Enzyme structures can be disrupted by heat. Nucleotides cannot form hydrogen bonds between 30 and 55 degrees Celsius. QUESTION 6 The following phrases are all examples of energy. Please, mark only the statements true of kinetic energy. wind turning the blades of a windmill water behind Keystone Dam gas cans sitting in the garage water falling down Niagara Falls a Slinky sitting on a desk a Slinky moving down the stairs QUESTION 7 What statement is true of the first law of thermodynamics? Energy is destroyed with each transformation until it disappears. Energy is constantly being created to replace lost energy. Energy is stored in objects, but it is used when those objects are in motion. Energy cannot be created or destroyed, but it can be transformed. QUESTION 8 Which is the correct description of an anabolic pathway? It generates molecules from smaller subunits. It breaks down molecules into smaller subunits. It transmits cell signals. It generates ATP. QUESTION 9 Which molecule is used as the primary source of energy for cells? NADH sucrose cholesterol ATP QUESTION 10 _______ is lost in small amounts in reactions, so entropy is always increasing. Energy Carbon Heat None of these.
Sri K.
During energy transformations, the majority of energy is converted to a. chemical bonds. b. heat. c. ATP. d. glucose molecules
Shaiju T.
Hari Krishna N.
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