7 IS 1.3

What is a compound?

• A single element

• A mixture of gases

• Two or more elements combined chemically

• A type of protein

What does the term "double helix" refer to?

• A type of compound

• A structure of DNA

• A kind of protein

• A form of lipid

What is the function of enzymes?

• To store energy

• To speed up chemical reactions

• To provide structure

• To transport oxygen

What element is common in most compounds found in living things?

• Hydrogen

• Oxygen

• Carbon

• Nitrogen

What is an example of an inorganic compound necessary for living things?

• Lipids

• Water

• Proteins

• Carbohydrates

What happens to starch when you eat foods containing it?

• It turns into fat

• It breaks down into glucose

• It becomes protein

• It remains unchanged

Where is cellulose, a type of carbohydrate, found?

• In the cell walls of plants

• In animal muscles

• In the bloodstream

• In the liver

What is an example of a complex carbohydrate?

• Glucose

• Starch

• Fructose

• Sucrose

What are lipids primarily made of?

• Carbon, hydrogen, and nitrogen

• Carbon, hydrogen, and oxygen

• Carbon, nitrogen, and sulfur

• Hydrogen, oxygen, and sulfur

What is the main function of proteins in cells?

• Storing genetic information

• Providing energy

• Building cell structures

• Transporting waste