2022 HB Unit 3 Exam Review - Proteins

The monomer of a protein is the ______________.

• nucleotide
• amino acid
• ATP

• nucleic acid

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NGSS.HS-LS1-6

The elements found in proteins but not carbohydrates and lipids are __________________________.

• nitrogen and sulfur
• nitrogen and phosphorus
• carbon and hydrogen
• iron

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NGSS.HS-LS1-6

Which includes examples of proteins?

• Enzymes, hemoglobin, antibodies

• Triglycerides, saturated & unsaturated fats

• DNA & RNA

• Starch, Glycogen, Cellulose & Glucose

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NGSS.HS-LS1-6

What is a protein:

• A polymer composed of many monosaccharides linked together by peptide bonds.

• A polymer composed of many amino acids linked together by peptide bonds.

• A polymer composed of many fatty acids linked together by peptide bonds.

• A polymer composed of many nucleic acids linked together by peptide bonds.

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NGSS.HS-LS1-6

What is a peptide bond?

• Bond that holds two amino acids together.
• A bond that holds hydrogen and oxygen molecules together.
• A bond that holds the phosphate group of one nucleotide and a sugar of a neighboring nucleotide.
• A bond that is formed by the sharing of electrons.

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NGSS.HS-LS1-6

How many different amino acids are there?

• 15
• 20
• 25
• 30

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NGSS.HS-LS1-6

Enyzmes are a very important type of protein used to

• Build bones in skeleton
• Send hormonal signals throughout body
• Speed up chemical reactions
• Photosynthesize glucose in plants

This is one job proteins do NOT have in the body

• storing genetic information
• structure
• speed up chemical reactions
• transport things through cell membrane

A chain of amino acids

• Monosaccharide

• Polysaccharide

• Polypeptide

• Enzyme

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NGSS.HS-LS1-1

NGSS.HS-LS1-6

What is a substance called if it speeds up a chemical reaction?

• reusable
• catalyst
• specific
• fragile

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NGSS.HS-PS1-5