Unit 2 Chapter 1
Proteins
Name:__________________________ Grade:__________________ Date:____________
I.
Multiple Choice
Read the questions carefully and Encircle the letter of the correct answer.
1. When we eat protein. It gets broken down into individual _______.
2.
3.
4.
5.
II.
a. Peptide bonds
b. Carboxyl group c. Amino acids d. Central carbon
How many amino acids are there needed for the body to function properly?
a. 20
b. 21
c. 35
d. 10
Amino acids have the same amino groups and carboxyl group, but
different?
a. Peptide bonds b. Side chain group c. Central carbon d. Proline
Fourteen plus teenage girls need about _______ of proteins.
a. 34 g
b. 56 g
c. 46 g
d. 52 g
Is found throughout the body in muscle, bone, skin, hair, and virtually every
other part or tissue.
a. Protein b. Muscle tissues c. Amino acids d. Carbohydrate
Identification
Identify what is being asked in the following sentences.
6. Are large, complex molecules composed of many smaller molecules called
amino acids.
7. Is the most abundant protein in the human body, forms bones, tendons,
ligaments, and cartilage.
8. Help animals fight off invasion by viruses and bacteria.
9. Amino acids that can get from foods and can make ourselves.
10. Amino acids have the same amino groups and _________.
11. Forms hair, nails, horns, feathers, and scales.
12. Casein in milk stores amino acids for use by some newborn animals.
13. ________ in red blood cells carries oxygen through the bloodstream.
14. Is formed between amino acid and the carboxyl group of another amino
acid.
15. Amino acids that we can only get from food.
III.
Matching type
Match each item in Column A with the types of writing found in Column B.
Column A
16. Alanine
17. Cysteine
18. Lysine
19. Serine
20. Valine
21. Aspartic Acid
22. Tyrosine
23. Glycine
24. Histidine
25. Asparagine
Column B
A. Nonessential
B. Conditionally Essential
C. Essential