click below
click below
Normal Size Small Size show me how
The Cell A&P1
Question | Answer |
---|---|
The study of cells | Cytology |
Prokaryotic - give 4 identifiers & 1 example | (first nucleus) No nuclear membrane, DNA in CIRCULAR double helix, lack of organelles, 70S ribosomes & bacteria |
Eukaryotic - give 4 identifiers & 1 example | (true nucleaus) nuclear membrane, DNA in seperate chromosomes, organelles present, 80S ribosomes & human (all cells except bacteria) |
Plasma cell membranes consist of (2) | Phospholipid bilayer & proteins |
phospholipid biayer is held together by _____ & _________, NOT __________ bonds | likes & dislikes. not a chemical bond. |
phospholipid bilayer consists of (2). what is their charge? | hydroPHILIC heads (charge) & hydroPHOBIC tails (no charge) |
the 4 protein functions | channels, receptors, enzymes, carriers |
substance (calcium, hormones) binds loosly to receptor to activate | ligand-gated |
electric charge or current activates | voltage-gated |
proteins act as _________ on the outside surface | receptors |
proteins act as _________ on the inner surface | Enzymes |
proteins transport glucose as _________ | carriers |
channels can be ________ or ________ | open or closed |
cell mambranes interacting | junction |
cell arrangement | fluid mosaic theory |
transmission of impulses from one cell to another | gap junction |
gap junctions in the human body found in (2) | heart & smooth muscle |
hold cells tightly together to prevent substances from passing in between cells | tight junction |
weld spots hold cells tightly together. 2 examples | desmosomes. skin & bladder |
organelles | small organs |
double membrane with pores | nucleus |
nucleolus is the site of _________ | ribosome assembly |
DNA + protein | chromosomes |
chromosomes consist of | DNA & protein |
ribsomes are the site of __________ | protein synthesis |
Ribosomes consist of | rRNA + protein |
rough ER makes proteins for | export |
intracellular protein | polysomes |
system of enclosing narrow channels | ER |
ER is countinuous with what membranes | countinuous with nuclear & cell membranes |
rough ER invloved with | protein synthesis |
smooth ER involved with | lipid synthesis & detoxification |
generally near the nucleus | Golgi Complex |
flattened sacs | cisternae |
golgie complex consists of | cisternae (flattened sacs) & globular vesicles |
Golgi principle function | PSPD (process, sort, package, deliver) proteins |
golgi produces what 2 types of vesicles | secretory vesicles (insulin) & lysosomes |
vesicles that export protein | secretory vesicles |