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WorksheetsFORMIDABLE_ Medical Biochemistry (MDB 203)
Total questions: 16
Worksheet time: 5mins
Which of the following laws of thermodynamics states that energy cannot be created or destroyed, only transformed from one form to another?
Zeroth law
First law
Second law
Third law
Enthalpy is a measure of:
Disorder in a system
Total energy of a system
Potential energy of a system
Heat exchange between a system and its surroundings
In a spontaneous reaction, which of the following is true?
∆G > 0
∆G < 0
∆G = 0
∆G is always positive
An exergonic reaction:
Requires energy input
Releases energy
Has a positive ∆G value
Is non-spontaneous
Which of the following statements regarding endergonic reactions is correct?
They release energy
They have a negative ∆G value
They are spontaneous
They require an input of energy
ATP hydrolysis is an example of:
Exergonic reaction
Isobaric reaction
Reversible reaction
Endergonic reaction
What is the primary role of compartmentalization in energy processes within cells?
To increase entropy
To separate reactants and products
To decrease free energy
To speed up metabolic reactions
Which organelle is primarily responsible for the compartmentalization of energy processes in eukaryotic cells?
Nucleus
Mitochondrion
Golgi apparatus
Endoplasmic reticulum
Which of the following processes is an example of energy transformation following the laws of thermodynamics?
DNA replication
Photosynthesis
Muscle contraction
All of the above
Which term refers to the transfer of energy from one molecule to another?
Fermentation
Substrate-level phosphorylation
Energy coupling
Glycolysis
Which molecule is commonly referred to as the "universal energy currency" of the cell?
Glucose
NADH
ATP
Pyruvate
During which process is glucose broken down into pyruvate?
Electron transport chain
Glycolysis
Krebs cycle
Fermentation
What is the final electron acceptor in aerobic respiration?
Oxygen
Nitrogen
Water
Carbon dioxide
Which of the following is NOT a product of the Krebs cycle (citric acid cycle)?
ATP
Pyruvate
FADH2
NADH
In which cellular compartment does the Krebs cycle occur?
Cytoplasm
Mitochondrial matrix
Inner mitochondrial membrane
Intermembrane space
Which of the following is NOT a function of ATP in the cell?
Energy storage
Energy transfer
Cell signaling
Structural support
