Year 8 Biology Test Revision

The difference between respiration and breathing is:

• Respiration is a chemical process of energy release, while breathing is the physical process of air exchange.

• Respiration is the movement of air in and out of the lungs, while breathing is the release of energy from food.

• Respiration and breathing are exactly the same processes.

• Breathing is a chemical process, while respiration is only physical.

Nutrients leave the circulatory system by which process?

• Osmosis through veins

• Active transport through arteries

• Diffusion through capillary walls

• Filtration through the heart

The difference between veins and arteries is:

• Veins carry blood to the heart, while arteries carry blood away from the heart.

• Veins carry oxygen-rich blood, while arteries carry oxygen-poor blood.

• Arteries have valves, while veins do not.

• Veins have thicker walls than arteries.

The purpose of mitochondria is to:

• Create proteins for the cell, and cells that make more proteins have more mitochondria.

• Store genetic information for the cell, and cells that divide more have more mitochondria.

• Control cell division, and cells that grow faster have more mitochondria.

• Produce energy for the cell, and cells that need more energy have more mitochondria.

The role of the left ventricle of the heart is to:

• pump oxygenated blood to the body

• receive deoxygenated blood from the body

• pump blood to the lungs for oxygenation

• receive oxygenated blood from the lungs

What is the function of the respiratory system?

• To digest food

• To facilitate the exchange of oxygen and carbon dioxide between the body and environment

• To pump blood

• To control movement

What is the name of the part labeled 1?

• Alveoli

• Bronchi

• Trachea

• Diaphragm

What is the name of the part labeled 2?

• Trachea

• Larynx

• Nasal cavity

• Pharynx

What is the name of the part labeled 4?

• Bronchi

• Alveoli

• Trachea

• Diaphragm

What is the name of the part labeled 5?

• Trachea

• Esophagus

• Bronchus

• Larynx