Atomic Structure, ATP, and Redox Reactions Quiz

What is the main function of enzymes in cellular reactions?

Where do most enzymes have a unique 3-dimensional structure?

What type of inhibitor competes for occupation of the active site of an enzyme?

In which organelle does the citric acid cycle occur?

What is the net production of ATP molecules at the end of glycolysis?

Which stage of cellular respiration occurs within the mitochondria?

Which subatomic particle has a positive charge?

In an oxidation-reduction reaction, which structure is considered reduced?

What is the principal molecule for storing and transferring energy in cells?

Which particle is much smaller than protons and carries a negative charge?

What happens to ATP when a phosphate group is removed by breaking a phosphoanhydride bond?

Which structure is compared to storing money in a bank due to its role in cellular energy?

Enzymes and Catalysis

Enzymes act as catalysts in cellular reactions, speeding up biochemical processes by lowering activation energy.
Most enzymes possess a unique 3-dimensional structure which is crucial for their specific function and interaction with substrates.

Enzyme Inhibition

Competitive inhibitors occupy the active site of an enzyme, thereby preventing substrate binding and hindering enzymatic activity.

Cellular Respiration

The citric acid cycle occurs in the mitochondria, where it plays a key role in the oxidation of acetyl-CoA to produce energy carriers.
Glycolysis generates a net production of 2 ATP molecules per glucose molecule.
The electron transport chain, a stage of cellular respiration, occurs within the mitochondria, utilizing NADH and FADH2 produced in previous stages.

Atomic Structure

Protons, found in the nucleus of an atom, carry a positive charge.
Electrons are significantly smaller than protons and possess a negative charge, orbiting around the nucleus.

Oxidation-Reduction Reactions

In oxidation-reduction reactions, the structure that gains electrons is deemed reduced, while the one that loses electrons is oxidized.

Energy Storage and Transfer

ATP (adenosine triphosphate) is the principal molecule for storing and transferring energy within cells, serving as a universal energy currency.
When a phosphate group is removed from ATP by breaking a phosphoanhydride bond, ATP is converted into ADP (adenosine diphosphate), releasing energy.
Mitochondria are analogous to a bank for cellular energy, as they store ATP and manage energy production through various metabolic processes.

Test your knowledge on atomic structure, ATP as the 'energy currency' of cells, and oxidation-reduction reactions where electrons are exchanged between chemical structures.