Endomembrane System Flashcards
which organelles are included in the endomembrane system
endoplasmic reticulum
golgi complex
lysosomes
vacuoles
ER divides the intracellular space in which two compartments
luminal
extra luminal
what is luminal compartment of ER
internal space enclosed by ER membrane
what is extra luminal compartment of ER
space present outside the ER membrane
types of ER
RER
SER
functions of SER
specialised in synthesis of lipids and steroids
functions of RER
protein synthesis and secretion
by who and when was golgi complex first observed
Camillo Golgi in 1898
in which pattern are cisternae of golgi complex arranged
concentric
size range of cisternae in golgi complex
0.5 micrometer to 1 micrometer in diameter
two faces of cisternae of golgi complex
cis and trans
cis is which face of golgi complex
convex or the forming face
trans is which face of golgi complex
concave or maturing face
functions of golgi apparatus
process, package and transport materials for secretions
modification of proteins from ER
important site of formation of glycoproteins and glycolipids
lysosomes are rich in which enzymes
hydrolytic enzymes
hydrolytic enzymes are also called
hydrolases
examples of hydrolases
lipases
proteases
carbohydrases
hydrolases are capable of digesting
carbohydrates
proteins
lipids
nucleic acids
lysosomes are opimally active at _____ pH
acidic
what do vacuoles contain
water
sap
excretory products
materials not useful for cell
in plant cells, vacuoles occupy upto ______ of volume of cell
90%
vacuoles are bounded by a single, semipermeable membrane called
tonoplast
what does tonoplast do
transport of a number of ions and other materials against concentration gradients into the vacuole
types of vacuoles
contractile vacuoles
food vacuoles
