click below
click below
Normal Size Small Size show me how
Cells12
Cells
| Question | Answer |
|---|---|
| hypertonic | higher concentration than cell fluids. Cell loses H2O and shrinks |
| hypotonic | Solution less concentrated than intercellular fluid Draws H2O in, sweels and bursts |
| Isotonic | Solution has same concentration of molecules as the fluid in the cells. Ex. Blood Plasma |
| endocytosis | bulk movement of materials into cells |
| plasma membrane | cells structure. outer covering of cells. Double layer lipd molecules |
| centrioles | rod shaped (pasta) CELL DIVISION |
| cytoplasm | main substance that fills cells and holds cell contents |
| Mitosis | division process by which cell reproduction occurs |
| Prophase | when double strand returns to spiral organization. centroils move to opposite ends of the cell |
| Osmosis | no enery required. DIFFUSION of water through semimermeable membrane |
| Diffusion | don't require cellular energy. constant movement from HIGH concentration to LOWER concentration. |
| Metaphase | chromosomes line up across thread like spindle...middle |
| Anaphase | Duplicate chromosomes seperate and begin to move towards opposite ends of cell |
| Interphase | genetic Material is doubled prior to split. MUST HAPPEN BEFORE |
| Nucleotide | must consist of phosphate unit nitrogen base sugar unit to make a nucleotide |
| nucleolus | inside nucleus. Manufacters proteins |
| Ribosomes | Formation of proteins. Where they are formed |
| endoplasmic reticulum | Network of membranes |