8C Breathing and Respiration

What is released during respiration?

• energy

• food

• air

• glucose

Respiration is aerobic if it requires

• carbon dioxide

• energy

• oxygen

• lungs

Which of these is the correct word equation for respiration?

• glucose + oxygen → carbon dioxide + water

• carbon + dioxygen → glucose + oxygen

• glucose → energy

• oxygen + carbon → carbon dioxide

During inhalation, rib and diaphragm muscles:

• contract to increase the pressure inside the lungs.

• relax to reduce the pressure inside the lungs.

• contract to reduce the pressure inside the lungs.

• relax to increase the pressure inside the lungs.

On the diagram, the part labelled X is the:

• blood vessel

• oesophagus

• trachea

• bronchus

Dust is prevented from getting into the lungs by a layer of mucus, which is swept away by:

• alveoli

• cilia

• filaments

• flagella

A poisonous substance in cigarette smoke

stops red blood cells carrying oxygen. This

substance is called:

• tar

• nicotine

• water vapour

• carbon monoxide

Anaerobic respiration can occur in a cell if

there is a lack of:

• oxygen

• water

• glucose

• nitrogen

Tags

NGSS.HS-LS2-3

During gas exchange in the lungs, there is overall diffusion of:

• carbon dioxide into the lung and oxygen into the blood.

• oxygen into the lung and carbon dioxide into the blood.

• oxygen and carbon dioxide into the blood.

• oxygen and carbon dioxide into the lung.

Tags

NGSS.MS-LS1-3

The main difference between combustion and aerobic respiration is that:

• only combustion releases energy by heating

• only respiration produces carbon dioxide

• only respiration produces water

• combustion is much faster

Tags

NGSS.MS-PS3-5