What is the definition of digestion?

• large insoluble molecules change into feces

• large insoluble molecules are changed into smaller soluble molecules

• small soluble molecules are carried to the liver

• small soluble molecules pass through the wall of the intestine

Which describes the state of muscles when breathing out?

• Diaphragm muscles contract, intercostal muscles relax

• Diaphragm muscles contract, intercostal muscles contract

• Diaphragm muscles relax, intercostal muscles relax

• Diaphragm muscles relax, intercostal muscles contract

Which best describes Aerobic Respiration?

• little energy released , no oxygen required and lactic acid is produced as waste

• little energy released , oxygen is required and carbon dioxide and water are produced as wastes

• alot of energy is released , no oxygen required and lactic acid is produced as waste

• alot of energy is released , no oxygen required and carbon dioxide and water are produced as wastes

Which organ produces bile?

• liver

• gall bladder

• esophagus

• pancreas

Which is the result of a diet lacking in iron?

• Osteoporosis

• Goiter

• Tooth decay

• Anemia

Which is the word equation of aerobic respiration?

• glucose + oxygen produces(=) carbon dioxide + water + energy

• glucose + carbon dioxide produces(=) oxygene + water + energy

• glucose + oxygen produces(=) carbon dioxide

• water + oxygen produces(=) carbon dioxide + glucose + energy

What is the site of gas exchange in lungs called?

• Trachae

• Bronchi

• Alveoli

• Esophagus

What is the process of gas exchange in the lungs called?

• Respiration

• Diffusion

• Peristalsis

• gas exchange

Name the 4 stages of digestion?

Write the letter with its correct label according to the diagram above.