SL C1.2 Cell respiration

Which statement best describes adenosine triphosphate (ATP)?

• A carbohydrate that stores long-term energy

• A lipid molecule that forms cell membranes

• A nucleotide that distributes energy within cells

• A protein that acts as an enzyme

Why is ATP considered the "energy currency" of the cell?

• It stores large amounts of energy for long periods

• It is easily hydrolyzed to release energy for cellular processes

• It can be used to transport oxygen in the bloodstream

• It can be converted into glucose for energy storage

Which property of ATP makes it highly suitable for energy transfer?

• It has a stable structure resistant to hydrolysis

• It can directly store energy in its sugar-phosphate backbone

• It releases energy efficiently by breaking phosphate bonds

• It can be used as a structural component of DNA

Which of the following cellular processes directly requires ATP?

• Passive diffusion of water

• Facilitated diffusion of glucose

• Active transport of ions across a membrane

• Osmosis of water molecules

During which process does ATP provide energy for cell movement?

• DNA replication

• Chromosome separation during mitosis

• Passive transport of gases across membranes

• Enzyme production in ribosomes

ATP is required for anabolic reactions because:

• It releases energy needed to build complex macromolecules

• It directly forms macromolecules without enzymes

• It breaks down large molecules into simpler ones

• It acts as a genetic blueprint for macromolecule synthesis

What happens when ATP is hydrolyzed to ADP?

• Energy is stored in newly formed phosphate bonds

• Energy is released for cellular activities

• Glucose is broken down into pyruvate

• Carbon dioxide is produced as a waste product

Which of the following is required to convert ADP back to ATP?

• Hydrolysis of proteins

• Addition of glucose

• Energy input from cellular respiration

• Removal of oxygen from the cell

What is the main purpose of ATP hydrolysis in cells?

• To store energy for long-term use

• To provide immediate energy for cellular processes

• To generate oxygen for respiration

• To create new DNA strands

What is the main function of cellular respiration?

• To store glucose in cells

• To generate ATP from organic molecules

• To produce oxygen for the cell

• To remove carbon dioxide from the body