click below
click below
Normal Size Small Size show me how
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 |