Biochemistry: Carbs

What is the function of carbohydrates in your body?

• Speed up chemical reactions.
• Give immediate energy.
• Help to store energy.
• Build cell walls in plants.

Tags

NGSS.MS-LS1-7

Which is the correct formula for a polysaccharide?

• C₆H₁₂O₆
• C₁₂H₂₄O₁₂
• C₁₂H₂₂O₁₁
• (C₆H₁₀O₅)n

Count up the atoms in the molecule. What is this molecule?

• disaccharide
• monosaccharide
• polysaccharide
• starch

What is the ratio of hydrogen to oxygen in carbohydrates?

• 1:1
• 2:1
• 3:1
• 4:1

What is the empirical formula of a polysaccharide that has 5 sugars?
(C₆H₁₀O₅)n

• C₁₂H₂₂O₁₁
• C₆H₁₂O₆
• C₆H₁₀O₅
• C₃₀H₅₀O₂₅

What elements make up carbohydrates?

• carbon, nitrogen, hydrogen, oxygen
• carbon, oxygen, phosphours
• carbon, nitrogen, oxygen
• carbon, hydrogen, oxygen

Which best describes an isomer?

• A molecule that provides immediate energy.
• A molecule that is structurally the same, but has a different number of atoms.
• A molecule that has the same atoms, but is structurally different.
• A molecule that can be put together to make bigger molecules.

Glucose is

• fruit sugar
• table sugar
• blood sugar
• milk sugar

What type of reaction is shown below?
monomer + monomer --> polymer + water

• dehyrolysis
• dehydration
• hydrolysis
• covalent

What type of reaction is shown below?
glucose + fructose <-- sucrose + water

• dehydration
• dehydrolysis
• hydrolysis
• covalent