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Biology CH 7

ch7 biology notes

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