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Chapter 2
7th science How Cells Function
| Question | Answer |
|---|---|
| basic units of life | cells |
| some cells have __________ that perform special functions for the cell | organelles |
| have cell walls and chloroplasts | plant cells |
| all living and non living matter can be broken down into basic substances called ______ | elements |
| cells needthis to sustain life | energy |
| smallest unit of any element | atom |
| bonds between atoms are broken and new bonds form to make different molecules | chemical reaction |
| cells use __________ for life activities | chemical energy |
| Simple carbohydrates | are sugar molecules. |
| Lipids | provide energy and give structural support |
| ____ carry out most of the chemical activity in cells | Proteins |
| Long chains of sugar molecules form more ______, such as starch & cellulose | complex carbohydrates |
| store and translate the instructions for the maintenance, growth, and reproduction of a cell | Nucleic acids |