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cells/classification
ch4 part 1
Term | Definition | Term | Definition | Term | Definition | Term | Definition |
---|---|---|---|---|---|---|---|
organism | complete living thing | cell theory | living things are made of cells and non-living things are not | organelles | inside cytoplasm tiny structures that helps carry out the functions | cell wall | provides extra support for the plant cells |
living thing | can grow, reproduce, respond, use energy, and made of cells | microscope | scientific instrument that uses lenses to magnify objects | nucleus | most obvious organelle that contains DNA | chloroplast | large structures that have green pigment |
life span | process of birth, growth, reproduction, and death | tissue | group of cells | chromosomes | tightly packed DNA | chlorophyll | green pigment that absorbs the suns energy and makes it usable |
life cycle | another name for life span | organ | group of tissues | mitochondria | cell's engines breaks down food and releases energy | cell division | individual cell cell reproduces itself by dividing itself |
cell | smallest unit of a living organism | system | group of organs | endoplasmic reticulum(ER) | allows materials to move through the cell | mitosis | step by step process that ensures new cells will be the same as the parent |
Robert Hooke | Inventor of microscope | cell membrane | boundary that keeps out things that don't belong and allows necessary things | ribosomes | along the ER and makes proteins by reading the DNA | sexual reproduction | male + female cells making new life |
Theodor Schwan and Matthias Scheilden | made the cell theory | cytoplasm | jelly-like substances contains fats and proteins | vacuole | place to store materials | meiosis | reproduction b dividing twice |