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Biology CH 7
ch7 biology notes
| Question | Answer |
|---|---|
| Organelle DNA ? | found in chloroplast & mitochondria, its essential for normal function of these organelles |
| the cell membrane is sometimes known as..? | lipid bilayer |
| Cell membrane? | flexible barrier |
| chloroplast? | contain chlorophyll to preform photosynthesis |
| mitochondria? | power house of the cell |
| example of active transport? | edocytosis, phagocytosis, exocytosis, pinocytosis |
| active transport? | DOES require energy bc it involves movement from area of low concentration to an area of high concentration against the concentration grading |
| aquaporins are a type of ...? | facilitated diffusion |
| aquaporins | special water channel protiens that allow water into the cell |
| diffusion | the movement of molecules across a membrane from high to low concentration |
| osmosis | diffusion of water across a selectively permeable membrane/ will continue until equaliblium is reached |
| hypotonic solution | concentration higher in cell ( water moves out, cell shrinks ) |
| isotonic solution | equalibrium is achieved |
| facilitated diffusion | some molicules must pass through the membrane using protien channels |
| example of eurokaryotes? | fungi, protist, plant/animal cells |
| example of prokaryotes? | bacteria |
| eurkaryotes | larger, more complex cells, contain a nucleus & membrane bound organelle |
| prokaryotes | small, simple cells that lack nucleus & membrane bound organelles |
| in 1855, Rudoff Virchow said..? | " where a cell exist, there must have been a pre-existing cell " |
| in 1839, Theodore Schwann said ..? | " all animals are made of cells " |
| In 18_ _, who said " all plants are made of cells " | Mathia Schleiden, 1838 |
| new cells are produced from...? | pre-existing cells |
| _____ are the basic unit of structure & function in living things | cells |
| all living things are composed of...? | cells |
| in _____, who used a simple microscope to look at a thin slice of cork? | 1665, Robert Hooke |
| who invented the single lens microscope & when? | Anton Van Leevenhook, 1600s |
| golgi apparatus | uses enzymes to attach carbohydrates & lipids to protiens |
| smooth ER? | without rybosomes |
| rough ER? | covered with ribosomes |
| endoplasmic reticulum ? | cell membrane componets are assembled & some protiens are modified |
| ribosomes? | protien syntheis |
| cytoskeleton? | supports |
| lysosomes? | clean up & contain digestive enzymes |
| vaccuoles & vesticles? | storage of water, salts, protien, and carbs |
| chromosomes? | condensed chromaton contains genetic info visible when cells divide |
| chromaton? | DNA bound to protien within the nucleus |
| organelle? | " tiny organs " |
| cytoplasm? | jelly-like, all organelles are suspended within |
| nucleus? | control center, identified by Robert Hooke in 1831 |
| nucleolus? | inside nucleus functions in the making of ribosomes |
Created by:
gkeals
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