Textbook Question
Metabolic rate is relatively low in:
a. Youth
b. Physical exercise
c. Old age
d. Fever
Ch. 24 Nutrition, Metabolism, and Energy Balance
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034
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Table of contents
- Ch. 1 The Human Body: An Orientation24
- Ch. 2 Chemistry Comes Alive25
- Ch. 3 Cells: The Living Units21
- Ch. 4 Tissue: The Living Fabric20
- Ch. 5 The Integumentary System11
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System26
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue19
- Ch. 12 The Central Nervous System26
- Ch. 13 The Peripheral Nervous System and Reflex Activity32
- Ch. 14 The Autonomic Nervous System19
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System23
- Ch. 17 Blood25
- Ch. 18 The Cardiovascular System: The Heart24
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues14
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Not the one you use?Change textbook
Chapter 24, Problem 8
Which of the following is not a function of the liver?
a. Glycogenolysis and gluconeogenesis
b. Synthesis of cholesterol
c. Detoxification of alcohol and drugs
d. Synthesis of glucagon
e. Deamination of amino acids.
Verified step by step guidance1
Step 1: Understand the question. The problem is asking which of the listed options is NOT a function of the liver. This means we need to identify the functions of the liver and determine which one does not belong.
Step 2: Review the functions of the liver. The liver is responsible for several key processes, including glycogenolysis (breaking down glycogen into glucose), gluconeogenesis (producing glucose from non-carbohydrate sources), cholesterol synthesis, detoxification of harmful substances like alcohol and drugs, and deamination (removal of the amino group from amino acids).
Step 3: Analyze each option. Go through each option and determine if it aligns with the known functions of the liver: a) Glycogenolysis and gluconeogenesis are liver functions. b) Synthesis of cholesterol is a liver function. c) Detoxification of alcohol and drugs is a liver function. d) Synthesis of glucagon is not a liver function; glucagon is synthesized by the pancreas. e) Deamination of amino acids is a liver function.
Step 4: Identify the correct answer. Based on the analysis, the option that does not describe a liver function is the synthesis of glucagon (option d).
Step 5: Conclude the reasoning. The liver does not synthesize glucagon; this hormone is produced by the alpha cells of the pancreas. Therefore, option d is the correct answer.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Liver Functions
The liver performs several critical functions, including metabolism, detoxification, and synthesis of important biomolecules. It regulates blood sugar levels through glycogenolysis and gluconeogenesis, synthesizes cholesterol, and detoxifies harmful substances like alcohol and drugs.
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Duct System of the Liver, Gallbladder, and Pancreas Example 1
Glycogenolysis and Gluconeogenesis
Glycogenolysis is the process of breaking down glycogen into glucose, while gluconeogenesis is the synthesis of glucose from non-carbohydrate sources. Both processes are vital for maintaining blood glucose levels, especially during fasting or intense exercise.
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Hormonal Synthesis
The liver is involved in the synthesis of various hormones, but it does not produce glucagon. Glucagon is primarily synthesized by the alpha cells of the pancreas, which plays a crucial role in regulating blood glucose levels by promoting glycogen breakdown and gluconeogenesis.
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Related Practice
Textbook Question
What is formed during aerobic respiration when electrons are passed down the electron transport chain?
a. Oxygen
b. Water
c. Glucose
d. NADH + H⁺
Textbook Question
Amino acids are essential (and important) to the body for all the following except:
a. Production of some hormones
b. Production of antibodies
c. Formation of most structural materials
d. As a source of quick energy
Textbook Question
Body temperature regulation is:
a. Influenced by temperature receptors in the skin
b. Influenced by the temperature of the blood perfusing the heat regulation centers of the brain
c. Subject to both neural and hormonal control
d. All of the above.
Textbook Question
In a temperate climate under ordinary conditions, the greatest loss of body heat occurs through:
a. Radiation
b. Conduction
c. Evaporation
d. None of the above
Textbook Question
Transamination is a chemical process by which:
a. Protein is synthesized
b. An amine group is transferred from an amino acid to a keto acid
c. An amine group is split from the amino acid
d. Amino acids are broken down for energy