CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
12th Edition
ISBN: 9780136920335
Author: Urry
Publisher: PEARSON
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Question
Chapter 9.6, Problem 4CC
Summary Introduction
To explain: Whether fat can be used as a concentrated source of chemical energy by muscle cells during intense exercise.
Introduction: Fatty acids and glycerol, the monomers of fat, enter the glycolysis step in the presence of oxygen. From there, they progress to the citric acid cycle and the electron transport chain, where energy is generated in the form of ATP.
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Students have asked these similar questions
Rat heart muscle operating aerobically fills more than 90% of its ATP needs by oxidative phosphorylation. If each gram of tissue consumes O2 at the rate of 12.0 micromol/min, with glucose as the fuel source.
(a) Calculate the rate at which the heart muscle consumes glucose and produces ATP.
(b) Consider an alternate scenario – what would be the rate of consumption if the energy source was a solely triglycerides whose fatty acyl chains were each 14-C in length and saturated? (Assume the O2 consumption rate remains at 12.0 micromol/min)
(c) For a steady-state concentration of ATP of 6.0 micromol/g of heart muscle tissue, calculate the time required (in seconds) to completely turn over the cellular pool of ATP if glucose us used as the sole fuel source. What does this result indicate about the need for tight regulation of ATP production? (Note: Concentrations are expressed as micromoles per gram of muscle tissue because the tissue is mostly water.)
Predict whether creatine kinase will operate in the direction of ATP synthesis or phosphocreatine synthesis at 25°C when [ATP] = 4 mM, [ADP] = 0.15 mM, [phosphocreatine] = 2.5 mM, and [creatine] = 1 mM.
Question:-
Skeletal muscle tissue produces energy in a particular sequence using several separate mechanisms. Of the following options, which best represents the correct sequence?
Answer: glycogen, direct phosphorylation, glycolysis, cellular respiration
Is this the answer??
Chapter 9 Solutions
CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
Ch. 9.1 - Compare and contrast aerobic and anaerobic...Ch. 9.1 - WHAT IF? If the following redox reaction...Ch. 9.2 - Prob. 1CCCh. 9.3 - Prob. 1CCCh. 9.3 - What process in your cells produce the CO2 that...Ch. 9.3 - Prob. 3CCCh. 9.4 - Prob. 1CCCh. 9.4 - WHAT IF? In the absence of O2 as in question 1,...Ch. 9.4 - MAKE CONNECTIONS Membranes must be fluid to...Ch. 9.5 - Consider the NADH formed during glycolysis. What...
Ch. 9.5 - WHAT IF? A glucose-fed yeast cell is moved from...Ch. 9.6 - MAKE CONNECTIONS Compare the structure of a fat...Ch. 9.6 - Prob. 2CCCh. 9.6 - Prob. 3CCCh. 9.6 - Prob. 4CCCh. 9 - Describe the difference between the two processes...Ch. 9 - Which reactions in glycolysis are the source of...Ch. 9 - What molecular products indicate the complete...Ch. 9 - Briefly explain the mechanism by which ATP...Ch. 9 - Prob. 9.5CRCh. 9 - Prob. 9.6CRCh. 9 - Level 1: Knowledge/Comprehension 1. The immediate...Ch. 9 - Prob. 2TYUCh. 9 - Prob. 3TYUCh. 9 - Prob. 4TYUCh. 9 - What is the oxidizing agent in the following...Ch. 9 - When electrons flow along the electron transport...Ch. 9 - Prob. 7TYUCh. 9 - Prob. 8TYUCh. 9 - Prob. 9TYUCh. 9 - Prob. 10TYUCh. 9 - INTERPRET THE DATA Phosphofructokinase is an...Ch. 9 - DRAW IT The graph here shows the pH difference...Ch. 9 - EVOLUTION CONNECTION AIP synthases are found in...Ch. 9 - SCIENTIFIC INQUIRY In the 1930s, some physicians...Ch. 9 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 9 - SYNTHESIZE YOUR KNOWLEDGE Coenzyme Q (CoQ) is sold...
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Similar questions
- Question: What is the isoelectric point of Cysteine and Glutamate, Illustrate structures and net charges (Determine the isoelectric point based on the pka) please give clear handwritten answer!arrow_forwardHow would muscle contractions be affected if ATP was completely depleted in a muscle fiber?arrow_forwardIntracellular concentrations in resting muscle are as follows: fructose6-phosphate, 1.0 mM; fructose-1,6-bisphosphate, 10 mM; AMP, 0.1 mM;ADP, 0.5 mM; ATP, 5 mM; and Pi, 10 mM. Is the phosphofructokinasereaction in muscle more or less exergonic than under standard conditions?By how much?arrow_forward
- Compute for ATP production of lipid ( a glycerol and a 16-C fatty acid) Topic: Biochemistry (Lipid Metabolism)arrow_forwardExplain why engaging in 30–60 minutes of “aerobics” is promoted as an activity that “burns fat.” Would you get this same “fat burning” from several 20-second sprints? Explain your answer in biochemical terms.arrow_forwardQ3 Calculate the actual, physiological AG for the reaction Phosphocreatine Creatine NH--PO3 HN=c NCH,-CO0 NH2 NH=c. HNCH2- COO ČH3 Creatine ADP phosphokinase АТР At 37 °C, as it occurs in the cytosol of neurons, with phosphocreatine at 4.7 mM, creatine at 1.0 mM, ADP at 0.73 mM and ATP at 2.6 mM. HINT: AG° = 30.5 kJ/mol AG° = -43.0 kJ/mol ADP + Pi -> ATP + H,0 Phosphocreatine + H2O -> creatine + Piarrow_forward
- Intracellular concentrations in resting muscle are as follows: fructose- 6-phosphate, 1.0 mM; fructose-1,6-bisphosphate, 10 mM; AMP, 0.1 mM; ADP, 0.5 mM; ATP, 5 mM; and P, 10 mM. Is the phosphofructokinase reac- tion in muscle more or less exergonic than under standard conditions? By how much?arrow_forwardis this stement false? Intracellular concentrations in resting muscle are as follows: Fructose-6-phosphate (1.0 mM)Fructose-(1-6)-bisphosphate (10.0 mM)AMP (0.1 mM)ADP (0.5 mM)ATP (5.0 mM)Pi (10.0 mM)Under the above conditions the Phosphofructokinase reaction in muscle is more exergonic than under standard conditions.arrow_forwardLET'S APPLY 2: COMPUTATION - Directions: Compute the following questions. Write your solution and answer on your answer sheet. 1 GLUCOSE = 40 ATP MOLECULES (TOTAL) 1 GLUCOSE = 36 ATP MOLECULES (NET) 1 ATP MOLECULE = 7.3 kCal 1. How many ATP molecules will be produced when 100 molecules of glucose undergo cellular respiration? a. Total ATP produced: b. Total net ATP produced: 2. Compute for the amount of energy in kcal of 1a and 1b. a. Energy in kcal of the total ATP produced: b. Energy in kcal of the total net ATP produced:arrow_forward
- When you hold a weight at arm's length, you are not doing any thermodynamic work but the muscles supporting the weight are nevertheless consuming energy. Describe, on the molecular level, how muscles might maintain such state of constant tension without contracting. Why does this state consume ATP?arrow_forwardSkeletal muscle can store energy in the form of phosphocreatine, which is able to regenerate ATP. In relation to this, answer all of the following: (Show all your work for each part) a) Use your knowledge of bioenergentics to show why this statement is true. b) What is K¢eq for the overall reaction? c) Drawbiochemicalstructuresfortheoverallreaction. d) If the steady-state concentrations of phosphocreatine and creatine in a myocyte (muscle cell) are 1 uM and 129 uM, respectively, what will be the ratio of [ATP]/[ADP], assuming the creatine kinase reaction is at equilibrium?arrow_forwardCalculate the rate enhancement for the enzyme pair: Enzyme 1: Kcat (sec-1)= 5.5 KM (µ M) = 1245 Kcat / KM = 0.00442 (µ M-1 sec-1) Enzyme 2: Kcat (sec-1)= 3.2 KM (µ M) = 1785 Kcat / KM = 0.00179 (µ M-1 sec-1)arrow_forward
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