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Concept explainers
(a)
Interpretation: The enzyme denoted by the acronym CPK has to be predicted.
Concept introduction: The concentration of enzymes is useful for obtaining information about a heart attack. The blood levels of the three enzymes commonly assayed in heart attack situation are: creatine phosphokinase (CPK), aspartate aminotransferase (AST) and lactate dehydrogenase (LDH).
(b)
Interpretation: The enzyme denoted by the acronym ALT has to be predicted.
Concept introduction: The concentration of enzymes is useful for obtaining information about a heart attack. The blood levels of the three enzymes commonly assayed in heart attack situation are: creatine phosphokinase (CPK), aspartate aminotransferase (AST) and lactate dehydrogenase (LDH).
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Chapter 21 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
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- Can you please help me answer the following question in three paragraphs and in your own words. 1. How do you determine the effects of substrate concentration on enzyme activity? (Do not write a procedure just give as many details as possible. Please make sure this is at least in three paragraphs and in your own words).arrow_forwardIndicate what will happen (increase, decrease or no effect) to the activity of the enzyme or rate of the metabolic pathway given the following conditions.arrow_forwardExergonic reactions such as the breakdown of ATP, are said to be “spontaneous.” However, by themselves, even exergonic reactions often proceed very slowly. What part of the curve helps to explain this? WHICH LETTER REPRESENTS IT? Thank you !(:arrow_forward
- a. Which unknown sample is the negative control? And Which unknown sample is the positive control? b. The experiment she conducted aimed to determine the action of what enzyme?arrow_forwardThe following statements are either True or False. Please label accordingly. a. L-Amino reductase is an enzyme. b. Allosteric enzymes are composed of two or more protein chains. Heavy metals are examples of inhibitors. They function by binding to sulfur on cysteine amino acid residues. C. d. A reversible noncompetitive inhibitor temporarily blocks an enzyme's active site. Enzymes don't denature as easily as smaller proteins when heated or stressed due to their complex secondary and tertiary structure. e. Oxidative phosphorylation is the biochemical process by which ATP is synthesized from ADP when protons cross the inner mitochondrial membrane. f. g. DNA and RNA strands differ only in the fact that DNA forms a double helix. h. There is no secondary structure in RNA strands.arrow_forwardLead exerts its poisonous effect on enzymes by two mechanisms. Which mechanism is irreversible and why?arrow_forward
- In two to three sentences, what are the biochemical features and properties of enzymes?arrow_forwardAn enzyme has a single active site at which it can bind and hydrolyze either X or Y but the enzyme cannot bind X and Y at the same time. Which of the following statements are TRUE? Multiple answers: Multiple answers are accepted for this question Select one or more answers and submit. For keyboard navigation. SHOW MORE The Km for X will be affected if Y is present in the reaction mixture. a Y is a competitive inhibitor of X. The Km for X will increase. d The Vmax for X will be affected if Y is present in the reaction mixture. pH dependence of Vmax reflects the ionization state of catalytic site residues. e Consider the following: X and Y are methanol (poisonous) and ethanol respectively. If the Km for X= 0.01 M and the Km f for Y = 0.001 M then 0.01 M Y is 10 times the concentration of Y required for 0.5 Vmax. Addition of an enzyme to a chemical reaction increases the ratio of products to reactants (Ken). A mutation in the active site of an enzyme resulting in a large increase in…arrow_forwardFor each of the four possibilities listed below (a through d), only one answer is correct and the others are false. Identify the correct statement and explain why the others are false. In your answer, write CORRECT next to the statement that you think is true, and ONLY for the ones that you think are false, explain what is wrong with the statement . When glucose reacts with ATP to form glucose-6-phosphate (as shown on the figure below): 1. The synthesis of glucose-6-phosphate is exergonic 2. ADP is at a higher energy level than ATP 3. Glucose-6-phosphate is at a higher energy level than glucose 4. Because ATP donates a phosphate to glucose, this is not a coupled reactionarrow_forward
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