Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 7, Problem 3CQ
Core Concept: Energy and Matter How is glucose breakdown regulated to avoid the overproduction of ATP and NADH? What would be some potentially harmful consequences if glucose
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No need to explain; simply provide the correct answer to the following questions.
What is the storage form(s) of energy in the human body?
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what process consists of breaking down glycogen into glucose to be used for energy?
In glycolysis, what enzyme catalyzes the conversion of glycogen into glucose 1-phosphate
Which statements are valid? a. (in the muscles, glycogen is a rapid source of energy) b. (in the liver, glycogen serves to maintain blood glucose levels) c. (in the brain, glycogen is used as the main energy source) d. (in animal cell, glucose is converted into starch for storage)
Within a cell, the complete breakdown of glucose to generate ATP occurs by two fundamentally different mechanisms. Name and briefly describe these mechanisms.
a. Calculate how many carbons from an original glucose molecule will enter into the TCA cycle? (please provide your answer in number like 1, 2, 3)
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Chapter 7 Solutions
Biology
Ch. 7.2 - Core Skill: Connections Look ahead to Table 45.1....Ch. 7.2 - Which organic molecules donate a phosphate group...Ch. 7.2 - Prob. 2CSCh. 7.4 - Prob. 1CCCh. 7.5 - Explain the meaning of the name cytochrome...Ch. 7.6 - Prob. 1CCCh. 7.6 - Prob. 1CSCh. 7.6 - Prob. 1EQCh. 7.6 - CoreSKILL In the experiment of Figure 7.13, what...Ch. 7.6 - Prob. 3EQ
Ch. 7.7 - Prob. 1CCCh. 7 - Which of the following pathways occurs in the...Ch. 7 - Prob. 2TYCh. 7 - Prob. 3TYCh. 7 - Which organic molecule supplies a two-carbon group...Ch. 7 - The ability to diagnose tumors using...Ch. 7 - Prob. 6TYCh. 7 - Certain drugs, which are called ionophores, cause...Ch. 7 - Prob. 8TYCh. 7 - Prob. 9TYCh. 7 - Prob. 10TYCh. 7 - Prob. 1CQCh. 7 - What causes the rotation of the subunit of ATP...Ch. 7 - Core Concept: Energy and Matter How is glucose...Ch. 7 - Discuss the advantages and disadvantages of...Ch. 7 - Prob. 2COQ
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- Glucose, carbon dioxide, pyruuate, acetyl CoA. Order from most potential energy to leastarrow_forwardUnder aerobic conditions when glucose is limiting, with high ratios of NADH/NAD+ and ATP/ADP, as carbon-2 radiolabeled pyruvate is utilized for its carbon skeleton, which molecules would you expect to see significant radiolabeling in the liver? Select all that apply. (multiple answers) Glucose C-2 only Label is halved over many TCA cycles Oxaloacetate Glucose C-1 and C-6 Glucose C-2 and C-5 CO2 from TCA cycle shows some radiolabel Lactate C-2 for export Malate Pyruvate C-1arrow_forwardNo need to explain; simply provide the correct answer to the following questions. Glycolysis occurs in which part of the cell? Fill in the blanks: in gluconeogenesis ______ is converted by the enzyme ______ Fill in the blanks: at the beginning of glycolysis, glucose is converted into ______ by the enzyme _______ What process involves the formation of glucose from non-carbohydrate sources? Which statements are valid? a. (Glucose is made up of carbon, hydrogen, and oxygen) b. (sucrose is made up of two glucose units) c. (Lactose is made up of glucose and galactose)arrow_forward
- Organ Specialization Describe which major metabolic pathways (glycolysis, glucogenesis, glycogenesis, glycogenolysis, PDH/CAC, fatty acid synthesis, beta oxidation, TAG synthesis, TAG hydrolysis) occur in the brain, muscle, liver, kidney and adipose tissuearrow_forwardIngesting large amounts of glucose before a marathon might seem to be a good way of increasing the fuel stores. However, experienced runners do not ingest glucose before a race. What is the biochemical reason for their avoidance of this potential fuel? (Hint: Consider the effect of glucose ingestion on the level of insulin.)arrow_forward(Biochemistry Topics: Glycolysis and Citric Acid Cycle) - Which of the following molecules can enter gluconeogenesis and provide an increase in the glucose concentration? Pyruvate, Succinate, 3-Phosphoglycerate, DHAP, Acetyl CoA, Lactate, All, or None?arrow_forward
- Instructions A glucose molecule is split, converted to ATP (another chemical), which is then used for a runner's sprint. Heat is given off in the process. Describe the changes in energy types from the beginning of the sprint to the end. Would you consider this reaction endothermic?arrow_forwardUsing glucose metabolism, justify the following statement: Metabolic pathways are highly interdependent and are exquisitely controlled by enzyme activity levels and substrate bioavailability.arrow_forwardThe control of which enzyme exerts the most control on glycolysis? hexokinase phosphofructokinase glucose-6-phosphatase aldolasearrow_forward
- A resting human hydrolyzes about 40 kg of aTP every 24 hours. The oxidation of how much glucose would produce this amount of energy?arrow_forwardComplete catabolism of one glucose molecule yields 38 ATP molecules. How many moles of ATP are produced by the complete catabolism of 10 moles of glucose?arrow_forwardPLS ANSWER When glycogen is synthesized in both the liver and muscle, all the following are true, EXCEPTA. Glucose 6-phosphate is converted to glucose by a phosphatase.B. Glucose is transferred from UDP-glucose to a growing glycogen molecule by glycogen synthase.C. Phosphoglucomutase converts glucose 6-phosphate to glucose 1-phosphateD.Glucose 1-phosphate is activated by UDP-glucose pyrophosphorylase to,produce UDP-glucose and PPi.arrow_forward
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