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Amino Acids: The Building Blocks of Life

Explore the structure, function, and importance of amino acids in biological systems with this comprehensive Grade 9 science worksheet.

Grade 9 Science BiologyAmino Acid
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Includes

Multiple ChoiceFill in the Blanks2 Short AnswerImageTrue / FalseWord Bank

Standards

MS-LS1-6HS-LS1-6

Topics

amino acidsproteinsbiologysciencegrade 9
9 sections · Free to use · Printable
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Amino Acids: The Building Blocks of Life

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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.

1. What is the primary function of amino acids in the human body?

a

Energy storage

b

Building proteins

c

Genetic information storage

d

Hormone regulation

2. Which of the following is NOT a component of a typical amino acid structure?

a

Amino group

b

Carboxyl group

c

Phosphate group

d

R-group (side chain)

3. There are   common types of amino acids that make up proteins.

4. The unique properties of each amino acid are determined by its  .

5. Amino acids are linked together by   bonds to form polypeptide chains.

6. Briefly explain the difference between essential and non-essential amino acids.

7. Referring to the diagram above, what is the role of ribosomes in protein synthesis?

8. All proteins are made up of the same sequence of amino acids.

T

True

F

False

9. Denaturation of a protein involves the breaking of peptide bonds between amino acids.

T

True

F

False

Use the words below to complete the sentences.

peptide
R-group
amino
carboxyl

10. Each amino acid contains a central carbon atom bonded to an   group, a   group, a hydrogen atom, and a unique  .

11. The bond that links two amino acids together is called a   bond.