Chapter 9 Test

What is the primary source of energy for most plants and animals?

• Water

• The sun

• Oxygen

• Carbon dioxide

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What is the equation for photosynthesis?

• C6H12O6 + 6O2 → 6H2O + 6CO2 + Energy

• 6H2O + 6CO2 + Energy → C6H12O6 + 6O2

• 6O2 + Energy → C6H12O6 + 6H2O

• 6CO2 + Energy + 6O2 → C6H12O6

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Which molecules help cells function efficiently?

• Enzymes and vitamins

• Proteins and carbohydrates

• Oxygen and carbon dioxide

• Fats and water

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Which vitamin must be replaced daily because it dissolves in water?

• Vitamin A

• Vitamin D

• Vitamin C

• Vitamin K

During cellular respiration, glucose reacts with:

• Carbon dioxide

• Oxygen

• Water

• Light energy

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What is a polymer?

• A small molecule that links to form large structures

• A large molecule made of repeating units

• A type of natural fiber

• A single atom

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What type of bond links monomers together in a polymer?

• Ionic

• Metallic

• Covalent

• Hydrogen

Which of the following is a synthetic polymer?

• Starch

• Nylon

• Cellulose

• Protein

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What are the building blocks of proteins?

• Monosaccharides

• Nucleotides

• Amino acids

• Fatty acids

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What natural polymer is found in plant cell walls and provides structural support?

• Starch

• Cellulose

• Protein

• Nylon