HAP20306 Lecture 14
What is the primary role of ATP in energy metabolism?
To provide energy for cellular processes
To store excess glucose
To regulate body temperature
To synthesize proteins
Which process involves the direct synthesis of ATP without oxygen?
Glycolysis
Krebs cycle
Electron transport chain
Beta-oxidation
Which process involves the majority of ATP synthesis during energy metabolism?
Electron transport chain
Glycolysis
Krebs cycle
Beta-oxidation
What is the net ATP yield from oxidizing one molecule of glucose through cellular respiration?
36-38 ATP
2 ATP
10 ATP
20 ATP
What happens to excess ATP in the cell?
It is hydrolyzed back into ADP and Pi
It is stored for later use
It is converted into glucose
It is excreted as waste
What is the correct order of events in glucose oxidation
Glycolysis
Krebbs cycle
Oxidative phosphorylation
(electron transport chain)
(chemiosmotic coupling)
What is the term for the amount of energy required to raise the temperature of 1 gram of water by 1 degree Celsius?
Which process involves the breakdown of glucose to produce ATP in the absence of oxygen?
Anaerobic glycolysis
Aerobic respiration
Krebs cycle
Electron transport chain
What is the term for the amount of energy expended at rest to maintain basic physiological functions?
What is the correct formula for energy balance in the body?
Input + Production = Utilization + Output
Input = Worked performance + Heat released
Input + Production = Worked performance + Heat released
Production = Worked performance + Heat release
What is the final electron acceptor in the electron transport chain during oxidative phosphorylation?
Oxygen
Carbon dioxide
Water
NADH
Which molecule serves as the primary electron carrier in the electron transport chain?
NADH
FADH2
ATP
Coenzyme Q10
What is the purpose of chemiosmotic coupling in oxidative phosphorylation?
To generate ATP
To pump protons
To produce NADH
To synthesize glucose
What is the primary source of energy for the human body during prolonged exercise?
Stored fat
Carbohydrates
Protein
ATP
Which process involves the breakdown of glycogen to produce glucose for energy?
Glycogenesis
Gluconeogenesis
Glycolysis
Glycogenolysis
What is the primary role of insulin in energy metabolism?
Promotes glucose uptake into cells
Stimulates glycogen breakdown
Increases glucagon secretion
Inhibits fatty acid oxidation
Which hormone is responsible for promoting glycogen breakdown in the liver?
Glucagon
Insulin
Epinephrine
Cortisol
How does glucagon affect fatty acid oxidation?
Increases fatty acid release from adipose tissue
Enhances fatty acid uptake by muscle cells
Stimulates ketone body production in the liver
Inhibits fatty acid oxidation in
What happens under the influence of insulin?
Glucose increase
Glucose decrease
Amino acid increase
Amino acid decrease
Parasympathic increase
Parasympathic decrease
Sympathic increase
Sympathic decrease
Epinephrine increase
Epinephrine decrease
What happens under the influence of glucagon?
Glucose increase
Glucose decrease
Amino acid increase
Amino acid decrease
Parasympathic increase
Parasympathic decrease
Sympathic increase
Sympathic decrease
Epinephrine increase
Epinephrine decrease
What is the primary mechanism by which vertebrates regulate their body temperature?
Thermoregulation
Homeostasis
Hibernation
Panting
Which of the following is an example of behavioral thermoregulation in vertebrates?
Basking in the sun
Shivering
Sweating
Vasoconstriction
Panting
Which part of the brain plays a crucial role in thermoregulation?
Hypothalamus
Cerebellum
Amygdala
Medulla oblongata
Which of the following is an example of physiological thermoregulation in vertebrates?
Sweating
Shivering
Panting
Seeking shade
Basking in the sun
What is the term for the process by which animals lower their metabolic rate and body temperature to conserve energy during periods of extreme cold?
What is the process by which heat is transferred through direct contact between objects of different temperatures?
Conduction
Radiation
Evaporation
Convection
Which of the following is an example of convection?
Boiling water
Sunlight warming the Earth's surface
Ice melting into water
Sweating to cool down
What is the process by which a substance changes from a liquid to a gas at temperatures below its boiling point?
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