Ch. 3 Cellular Processes

A protein that speeds up a chemical reaction in a living thing.

• Enzyme
• Starch
• Sugar
• Nucleic Acid

Air is a mixture of

• Liquids
• Solids
• Gases

The smallest unit of an element is called a

• Molecule
• Atom
• Compound

Co2

• Carbon
• Oxygen
• Carbon Dioxide
• Carbon Monoxide

H2O

• Carbon Dioxide
• Water
• Salt
• Hydrogen Oxygen

Water makes up about ____ of your body.

• 3/4
• 2/3
• 1/2
• 1/4

Foods that are high in protein include

• Rice & Bread
• Milk & Yogurt
• Meat & Eggs
• Cabbage & Onions

The process by which molecules move from an area of high concentration to an area of lower concentration is called

• Diffusion
• Osmosis
• Active Transport 

Process in which water molecules diffuse through a selectively permeable membrane.

• Diffusion
• Osmosis
• Active Transport

Process in which a cell captures energy in sunlight and uses it to make food is called

• Respiration
• Photosynthesis
• Digestion
• Baking