Digestive System Quiz

What are the two main reasons for eating food?

• To obtain energy and to get raw materials

• To obtain water and to get vitamins

• To obtain sunlight and to get minerals

• To obtain protein and to get carbohydrates

What are living things made of?

• Proteins and carbohydrates

• Cells and tissues

• Matter and atoms

• Stuff and energy

What are enzymes used for in digestion?

• To speed up chemical reactions

• To absorb nutrients from food

• To provide energy to the body

• To break down large molecules

What are the four main kinds of biological molecules?

• Proteins, carbohydrates, minerals, water

• Lipids, carbohydrates, proteins, nucleic acids

• Vitamins, minerals, water, fiber

• Sugars, fats, vitamins, amino acids

What is the caloric value of 1 gram of fat?

• 4 calories

• 7 calories

• 12 calories

• 9 calories

What are the four main kinds of monomers?

• Fatty acids, sugars, amino acids, nucleotides

• Lipids, carbohydrates, proteins, nucleic acids

• Vitamins, minerals, water, fiber

• Proteins, carbohydrates, minerals, water

What is the main goal of the digestive system?

• To produce energy and store fat

• To absorb oxygen and release carbon dioxide

• To build muscles and repair tissues

• To break down food and release nutrients

What is the initial mechanism of propulsion in the digestive system?

• Swallowing

• Peristalsis

• Absorption

• Chewing

What is the main function of the accessory digestive organs?

• To provide structural support to the digestive system

• To absorb nutrients from food

• To secrete enzymes to break down food

• To store energy in the body

What is the role of peristalsis in the digestive system?

• To break down large molecules into monomers

• To squeeze food through the lumen of the alimentary tract

• To secrete mucus to protect the cells

• To absorb nutrients from the food