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Cells
| Question | Answer |
|---|---|
| organelles | groups of complex molecules that help cells survive |
| cells | the building blocks of life |
| Cytoplasm | a suspension fluid that houses the other organelles |
| cell membrane | a boundary layer around the cytoplasm thus separating cells from their outside environments |
| cell wall | a secretion of the cell membrane |
| lysosomes | contain enzymes specialized to break down ingested materials, secretions, and wastes |
| nucleus | brain of a cell |
| chromatin | composed of long, thin strands of DNA which contains instructions that control cell metabolism and heredity |
| Ribosomes | RNA and protein complexes that are found in all cells |
| Mitochondria | act like a stomach for the cell |
| Chloroplasts | the food producers in a plant cell |
| endoplasmic reticulum | transports chemicals between and within cells |
| Organ systems | fourth and fifth highest level of organization |
| organ | a group of tissues that work together to perform a specific function |
| Vacuole | a fluid filled organelle that stores enzymes and wastes |
| Plastids | contains pigments |
| Multicellular | made up of more then one cell |
| Unicellular | made up of one cell |
| Nerve impulses | send signals from the central nervous system to the cells of the rest of the body |
| Homeostasis | regulation of metabolic processes to maintain the stable internal conditions required for survival |
| Active Transport | requires the input of energy (ATP) in order to move molecules from an area of low concentration to an area of high concentration |
| Membrane pumps | protein molecules embedded in the cell membrane that transport molecules across the cell membrane against the concentration gradient |
| Diffusion | involves the movement of material across the cell membrane from an area of high concentration to an area of low concentration |
| Facilitated diffusion | a type of diffusion that uses special transport proteins to transfer larger molecules across cell membranes |
| Filtration | the movement of water and solute molecules across the cell membrane due to hydrostatic pressure |
| Osmosis | the movement of water molecules across the cell membrane |
| hypertonic | A solution that has a higher salt concentration than that inside the cell |
Created by:
allengautier
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