Biology 1 – Chem4kids.com Biochemistry worksheet

Name Hour

Log on to your computer, go to the internet and go to the site chem4kids.com

Click on the BIOCHEMISTRY button. On the right side of the screen there will be a topic list under the heading BASICS OF BIOCHEM. The topic headings on this paper correspond to the headings on the website. Read through the sections listed, and answer the following questions.

BIOCHEMISTRY

1. Biochemistry is the

CARBOHYDRATES

2. Carbohydrate is a fancy way of saying

3. Carbohydrates are because they contain

4. Name 2 things that sugars are used for

5. Scientists also use the word to describe sugars

6. Define:

Monosaccharide:

Disaccharide:

Polysaccharide:

7. is the most important sugar on earth

8. Polysaccharides are of combined in a chain. They are also known as

9. List several examples of polysaccharides and what they are used for:

LIPIDS

10. What are lipids?

11. Explain the structure of triglycerides:

12. What is the difference between saturated and unsaturated fats?

13. What are steroids used for in animals?

14. What are waxes used for?

15. Fats store lots of

AMINO ACID STRUCTURE

16. Amino acids consist of a common group (which is the same in all amino acids) and a side group (which varies between different amino acids). Name and describe the 2 smaller groups of atoms combined in the common group. (Refer to both the paragraph and the diagram)

17. 20 amino acids are use to make . 8 of them are called

18. Name 3 types of “side groups” found on amino acids:

PROTEINS

19. The chain structure of a protein is called the structure

20. What 2 “secondary structures” can form as a chain of amino acids begins to twist?

21. As the chain twists more, and the twists are held in place by bonds and bridges, the protein forms its structure.

22. In the quaternary structure

fold together in a blob.

ENZYMES

23. Enzymes act as and help

24. How are enzymes like a lock and a key?

25. Explain the 4 steps in the process of enzyme activity:

ENZYME REGULATION

26. List some factors that affect enzyme activity:

NUCLEIC ACIDS

27. List several types of nucleic acids:

28. Nucleic acids are chains of that make a shape called a

29. List the 5 types of nucleotides:

30. Nucleotides are made of 3 parts: