part of a cell Flashcards
what is the plasma membrane
Physical barrier which regulates the flow of molecules in and out of a cell, as well as intracellular signaling
cholesterol in plasma membrane
helps keep the plasma membrane strong
types of transport across the plasma membrane
Active transport-requires energy
Passive transport
passive transport/types
diffusion- movement from high concentration to low
osmosis- movement of water
nucleus
double layer membrane with the outmost membrane as the envelope.
function of the nucleus
controls cellular structure
produces ribosomes
start of the protein production pathway
cytosol
liquid part of the cell which contains all of the organelles and help to maintain the cell structure
cytoskeleton
maintains structural integrity of the cell
rough endoplasmic reticulum
covered in ribsomes and is part of the protein production pathway
smooth endoplasmic reticulum
detoxifies drugs and harmful substances
ribsomes
translation of mrna, part of the protein production pathway
bound ribosomes
synthesis of protein bound for secretion
free ribsomes
synthesis of protein for use in the cytosol
golgi complex
modify and package proteins
mitochondria
performs aerobic cellular respiration to produce atp
lysosomes
contain digestive enzymes which can be used to kill bacteria, viruses and other non self cells
microvilli
small protrusions which increase the surface area hence increasing the absorption
stereocilia
moves liquids and other fluids
cilia
small hair like projections which move particles
flagella
similar to cilia, but is one strand which is much longer and allows the whole cell to move
