Cells Word Scramble
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Term | Definition |
Cell membrane | semi-permeable structure, lipid bilayer separates cell from external environment |
Cytoplasm | semi-fluid substances that holds all cell's organelles |
Cytoskeleton | network of microtubules to give cell shape and to support it |
Microvilli | extensions of cell membrane to increase surface area of cell |
Cilia | hair-like extensions of cell membrane to move |
Centrosome | used in cell division, spindle apparatus attaches here |
Centrioles | microtubules that make up centrosome |
Ribosomes | makes protein |
Mitochondria | powerhouse of cell, makes ATP |
Nucleus | control center, DNA located here |
Nucleolus | inside nucleus, makes rRNA |
Endoplasmic Reticulum | network of membranes there are 2 types |
Rough ER | has ribosomes |
Smooth ER | makes lipids, steroids, and involved in detoxification |
Golgi Body | packs protein and sends them in membrane bound vesicles |
Lysosome | filled with hydrolytic enzymes |
Flagella | long, whip-like structure to move, only in sperm cells for humans |
Adenosine triphosphate (ATP) | primary energy carrier in body ATP-> ADP+Pi+E |
Amount of energy | corresponds to amount of energy needed to drive biochemical reactions |
Cells are protected | from excessive energy release that might be damaging and energy squandering is kept to a minimum |
Passive Cell Transport | no energy needed |
Diffusion | movement from area of high concentration to area of low concentration |
Simple Diffusion | unassisted diffusion of small particles or lipid soluble molecules |
Osmosis | unassisted diffusion of water |
Facilitated Diffusion | diffusion with help of proteins |
Active Cell Transport | needs energy and carrier protein, movement from area of low concentration to area of high concentration |
Bulk Transport | needs energy |
Exocytosis | substance moves to the outside of the cell |
Endocytosis | substance moves to the inside of the cell, two types |
Phagocytosis | solid is moved inside cell |
Pinocytosis | liquid is moved inside cell |
Receptor-Mediated Endocytosis | molecules bind to specific receptors on cell surface: binding is very specific only certain molecules will be allowed into cell |
Isotonic | concentration inside cell is EQUAL to concentration outside cell: no movement of water |
Hypertonic | concentration outside cell is HIGHER than concentration inside cell: water moves out of cell: cell shrinks |
Hypotonic | concentration inside cell is HIGHER than concentration outside cell: water moves in cell: cell swells or burst |
Created by:
mchuan
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