Question | Answer |
cell | smallest unit of living matter |
what all living things need | food, water, oxygen, shelter |
organism | living thing |
5 jobs of all organisms | reproduce, offspring, food for energy, get rid of waste, react to changes in the environment |
oxygen | gas in air |
reproduce | to make copies of themselves |
offspring | young of living things |
plant properties | cell wall is box shape, chlorophyll |
animal properties | cell membranes round |
tissue | many cells grouped together doing a job |
largest organ | skin |
organ system | serveral organs to preform life functions |
bacteria | smallest cell of all |
microscope | makes small things look bigger |
viruses | cannot reproduce on their own, smaller than a cell |
thick protective cell wall | plant cells |
thin membrane and no cell wall | animal cells |
reason why plant cells need a thick protective coating | plant cells need a thick protective coating to prevent viruses from getting to the nucleus and taking control |
why do plants cells need more protection than animal cells | plants cannot move on their own so their cells need more protection. Also, thick cells walls may make it easier for plants to store food for long periods of time |