Parts Of Cells (chpter 3) Flashcards
Plasma membrane
Structure: 45% lipid, 50% protein and 5% carbohydrates
Location: entire cell
Function: provides barrier that regulates movement of materials
Microvilli
Function: tiny folds that increase the surface
Location: outward away from the plasma membrane
Function: increase plasma membrane for surface area for absorption
Cytoplasm
Structure: gel-like fluid
Location: between plasma and nucleus
Function:region of cell metabolism
Cystosol
Structure: gel like fluid composed of water and proteins
Location: surrounds organelles
Function: fluid environment for cell function
Organelles
Structure: formed bodies
Location:
Function: activity that maintain the cell
Centrosom
Structure: composed of two centrioles
Location: near the nucleus
Functions: participants in cell division, organizes cytoskeleton
Cytoskeleton
Structure: microtubules
Location: throughout the cytoplasm
Function: positions organelles
Cilia
Structure: long, slender projections of the membrane
Location: extend outward away from the cell surface
Functions: rhythmic movements propel materials across cell surface
Ribosomes
Structure: small circle structures made of 60% RNA and 40% protein
RER ( rough endoplasmic reticulum)
Structure: branching tubles that may be flattened or tubular, with attached ribosomes
Location: extends between nucleus and plasma membrane
Functions: modifies proteins
SER (smooth endoplasmic reticulum)
Structure: branches tubules that may be flattened or tubular without ribosomes
Location: twist throughout cytoplasm
Function: site of lipid and carbohydrate assembly
Mitochondria
Structure: sausage shape
Location: randomly throughout cytoplasm
Function: site of energy production by aerobic respiration
Golgi apparatus
Structure: flattened disc - shaped sacs
Vesicles
Structure: small sacs surrounded by membrane
Location: randomly throughout cytoplasm
Functions: transport, storage, and digestion,
Peroxisome
Structure: small circle vesicle
Location: randomly throughout cytoplasm
Functions: contains detoxifying enzymes