Chemical Reactions Of Cells, Lesson 2

Question 0

2. Compound

Answer 0

a substance made of two or more elements chemically combined in a specific ratio or proportion.

Question 1

1. Element

Answer 1

a pure substance that cannot be broken down into other substances by chemical or physical means.

Question 2

3. Organic compound.

Answer 2

compounds that contain carbon.

Question 3

4. Inorganic compound

Answer 3

compounds that don’t contain carbon.

Question 4

5. Carbohydrate

Answer 4

an energy-rich organic compound, such as a sugar or a starch, that is made of the elements carbon, hydrogen, and oxygen.

Question 5

6. Lipid

Answer 5

an energy-rich organic compound, such as fat, oil, or wax, that is made of carbon, hydrogen, and oxygen.

Question 6

7. Protein

Answer 6

large organic molecule made of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.

Question 7

8. Enzyme

Answer 7

A type of protein that speeds up chemical reactions in living things.

Question 8

9. Nucleic Acids

Answer 8

a very long organic molecule that contains the instructions that cells need to carry out all of the functions of life.

Question 9

10. DNA

Answer 9

the genetic material that carries information about an organism and is passed from parent to offspring. This information directs a cell’s functions.