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Worksheetsquiz on intro to metabolism: Fuels and Their Regulation
Total questions: 15
Worksheet time: 8mins
Which metabolic fuel is always required by the central nervous system?
Amino acids
Ketone bodies
Glucose
Fatty acids
What is the primary metabolic pathway used by erythrocytes?
Gluconeogenesis
Beta-oxidation
Glycolysis
Oxidative phosphorylation
In the fed state, what happens to the respiratory quotient?
It decreases
It remains constant
It becomes negative
It increases
What hormone is responsible for glucose uptake in muscle and adipose tissue?
Glucagon
Insulin
Cortisol
Epinephrine
What happens to glucose transporters in muscle and adipose tissue in response to insulin?
They are degraded
They migrate to the cell surface
They are internalized
They become inactive
Which enzyme in the liver is responsible for converting glucose-6-phosphate to glucose?
Glucokinase
Hexokinase
Glycogen phosphorylase
Glucose-6-phosphatase
What is the primary use of glucose in the liver after a meal?
Glycogen synthesis
Lipogenesis
Energy production
Protein synthesis
What happens to protein synthesis in the fed state?
It stops
It decreases
It remains constant
It increases
What is the effect of fasting on plasma glucose levels?
It decreases and then stabilizes
It increases significantly
It remains constant
It fluctuates wildly
Which hormone increases during fasting to promote glycogen breakdown?
Insulin
Cortisol
Glucagon
Adrenaline
What is the primary metabolic fuel for the brain during fasting?
Lactate
Ketone bodies
Glucose
Fatty acids
What happens to lipoprotein lipase activity in adipose tissue during fasting?
It is activated
It remains unchanged
It is synthesized
It is inhibited
What is the fate of glycerol released from adipose tissue during fasting?
It is used for lipogenesis
It is stored as fat
It is converted to glucose
It is excreted
What is the role of acetyl-CoA in prolonged fasting?
It is used for energy production
It is converted to glucose
It is used to synthesize ketone bodies
It is stored as fat
What happens to muscle glycogen during fasting?
It is released into the bloodstream
It is stored as fat
It is used for energy in the muscle
It is converted to glucose
