Cellular Metabolism Quiz

What is the primary function of anabolic pathways in cellular metabolism?

• To synthesize complex molecules from simpler compounds

• To generate ATP

• To break down complex molecules

• To transport electrons

Which process is primarily responsible for energy release in catabolic pathways?

• Protein synthesis

• Glycolysis

• DNA replication

• Fatty acid biosynthesis

What role do enzymes play in metabolic reactions?

• They only function in anabolic pathways

• They inhibit all metabolic processes

• They accelerate reactions by lowering activation energy

• They are consumed in the reactions

How does the pyruvate dehydrogenase complex function in metabolism?

• It breaks down fatty acids

• It generates ATP directly

• It channels intermediates efficiently from one active site to another

• It synthesizes glucose from pyruvate

What is the significance of metabolic flux in cellular metabolism?

• It measures ATP production only

• It describes the energy stored in ATP

• It indicates the rate at which metabolites flow through pathways

• It refers to the rate of enzyme synthesis

Which of the following best describes the TCA cycle?

• It generates glucose from pyruvate

• It is only involved in fatty acid metabolism

• It occurs in the cytosol

• It is the final common route for oxidation of fuel molecules

What is the primary function of ATP in cellular metabolism?

• To transport electrons

• To serve as the main energy currency

• To store genetic information

• To synthesize nucleic acids

How do allosteric enzymes regulate metabolic pathways?

• By binding to the active site only

• By monitoring cellular energy levels through the ATP/AMP ratio

• By permanently altering enzyme structure

• By increasing substrate concentration

What is the role of NADH and FADH2 in metabolism?

• They are used to synthesize proteins

• They transport electrons to the electron transport chain

• They are involved in glycolysis only

• They serve as energy carriers in anabolic pathways

Which statement best describes the Warburg effect in cancer cells?

• Cancer cells rely solely on oxidative phosphorylation

• Cancer cells prefer glycolysis even in the presence of oxygen

• Cancer cells do not utilize glucose

• Cancer cells only use fatty acids for energy