Question | Answer |
tissues | group of cells that work together to perform a specific job |
organ | group of tissues that work together |
organism | anything that can live on its own |
unicellular | one celled organism |
multicellular | more than one celled organism |
population | a group of individuals of the same species that live together in the same area at the same time |
community | all of the populations of different species |
ecosystem | a community of organisms and their nonliving environment |
cell membrane | controls what enters and leaves the nucleus |
organelles | structures within a cell that enable the cell to live, grow, and reproduce |
cytoplasm | liquid portion of the cell containing all the organelles |
nucleus | controls cell activities |
prokaryotic | a cell that does not have a nucleus or any other membrane-covered organelles |
eukaryotic | a cell that does have a nucleus |
bacteria | extremely small prokaryotic single-celled |
cell wall | provides strength and support to plant cells |
ribosome | makes protein |
endoplasmic reticulum | makes lipids and transports proteins and other materials through the cell |
mitochondria | supply the cell with energy |
mitochondria | respiration occurs here |
chloroplast | contain the chlorophyll needed to carry on photosynthesis |
Golgi complex | processes and transports materials out of the cell |
vacuole | stores food, water and waste |
lysosome | contain enzymes that digest food |
organ system | a group of organs that work together to perform body functions |