CCEA GCSE Respiration

What is NOT a product of cellular respiration?

• Water

• Carbon dioxide

• Energy (ATP)

• Oxygen

What is the word equation for aerobic respiration?

• Oxygen + Carbon dioxide ➡ Glucose + Water + Energy

• Glucose ➡ Ethanol + Carbon Dioxide + Energy

• Oxygen + Glucose ➡ Carbon dioxide + Water + Energy (ATP)

• Glucose ➡ Lactic Acid + Energy

Which of the following is NOT used by organisms for the energy released from respiration?

• Active transport

• Growth

• Photosynthesis

• Movement

What happens during anaerobic respiration in human muscles?

• Glucose ➡ Lactic Acid + Energy

• Glucose ➡ Carbon dioxide + Water + Energy

• Glucose ➡ Ethanol + Carbon Dioxide + Energy

• Oxygen + Glucose ➡ Carbon dioxide + Water + Energy (ATP)

What is the function of the alveoli in the respiratory system?

• The site of gas exchange

• To protect the lungs

• To carry air to and from the lungs

• To filter and warm the air

Why is the glucose solution boiled before adding yeast in the demonstration of anaerobic respiration?

• To cool the solution

• To activate the yeast

• To sterilize the solution

• To increase the glucose concentration

What gas is contained inside the bubbles released during the experiment demonstrating anaerobic respiration in yeast?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What is the main purpose of the diaphragm in the respiratory system?

• To carry air to and from the lungs

• To protect the lungs

• To move up and down during breathing

• To filter the air

What happens to the pressure inside the bell jar when the rubber sheet is pulled down in the model lung demonstration?

• Pressure fluctuates rapidly

• Pressure remains the same

• Pressure increases

• Pressure decreases

Why do athletes continue to breathe heavily after a period of anaerobic respiration?

• To cool down the body

• To increase oxygen intake for energy

• To prepare for the next exercise

• To break down lactic acid