Flashcards in Ch.3 Cell review Deck (71):
fluid bilayer of lipids (phospholipids, cholesterol, glycolipids). Selectively permeable.
enzymes, receptors which mediate membrane transport functions
tight junctions are
allow cells to communicate
ATP. Energy to transport substance across membrane
kinetic energy. down a concentration gradient.
solutes across a membrane by their binding with a membrane carrier protein. kinetic energy (passive transport)
diffusion of a solvent, such as water, through a selectively permeable membrane. LOW TO HIGH water conc. but high to low solute conc. (SALT SUCKS).
loss of water from cells
gain of water to cells (lysis maybe)
primary active transport
sodium, potassium pump.
secondary active transport
symport or antiport.
same direction across membrane (secondary active transport)
substances move in the opposite direction across membrane
large particles. ingest or engulf particles. (vesicular transport)
dissolved molecules. small particles across cell membrane
engulf molecules attach to receptors on the membrane (active transport)
concentration and electrical gradients
sodium is in
high extracellular conc. 3 pumped into extracellular
potassium is in
high intracellular conc. (membrane more permeable to potassium) 2 pumped into intracellular
established when K moving in and out of cell is the same
consists of cytosol and all organelles. (Major functional area of the cell)
fluid within cell
ATP formation. Cellular respiration
RNA, protein synthesis
from the ER transport the proteins to other cell sites
synthesizes lipids and steroid molecules. Detoxification, fat metabolism.
packages protein secretions for export
Hydrolases. Degrade worn out organelles, release ionic calcium.
contain oxidase enzymes. protect cell from free radicals.
microtubules, intermediate filaments, microfilaments.
organize the cytoskeleton, intracellular transport.
movement of cell parts (motility)
connect other elements
mitotic spindle. cilia/ flagella
increase surface area
proteins and DNA
events of cell till it divides
centriole replication begins. DNA REPLICATES (G1, S, G2,)
consists of two distinct phases: mitosis and cytokenisis
nuclear division. Consists of prophase, metaphase, anaphase, and telophase (PMAT)
division of the cytoplasm
DNA provides instructions to synthesize one polypetide chain
DNA transmits message to RNA via
protein synthesis involves
transcription and translation
synthesis of mRNA
reading of mRNA by tRNA. Peptide bonding of amino acid to polypeptide chain
dispose of damaged cells
molecule used in metabolic process
cellular respiration that requires oxygen
cell. respiration that doesn't require oxygen
chromosome move toward each pole of cell.
turns food into usable energy (ATP) glucose + oxygen => CO2 +H20 + ATP (energy)
during mitosis splits and moves to opp. poles of cell. regulates cell cycle.
Electron transport chain
redox reaction (transfer electrons from electron donor to electron acceptor)
proteins permanently attached to membrane (transport channels). cell adhesion.
Strands of chromatin condense into chromosome.
chromosomes align at the metaphase plate. chromosome replicate and form two sister chromatids.
cell has divided equally into two nuclei. Here we see cleavage furrow.
choline, phosphate, glycerol, two fatty acids
peripheral and integral proteins
only attach for a short term to membrane (recognition sites)
carbohydrate attached. provide energy.