cell structure 2

• inner space of ER is the cistern
• rER is in charge of protein synthesis and modification
• sER is in charge of lipid and steriod synthesis, and detoxification
• rER stains blue due to having ribonucleic acid
• protein synthesis occurs on the ER for export, and the cytosol for use within the cell
• the rER can expand considerably to accumulate protein
• after translation, mRNA is sent to the face of the golgi, entering into the cistern, where enzymes package up protein for export
• lysosomes have an acidic pH and contain hydrolytic enzymes
• peroxisomes are self replicating that have oxidative enzymes used for catabolism of long fatty acids
• mitochondria are self replicating and have a life span of about 10 days
• the more cristae a mitochondria has, the more ATP production
• lipid droplets have 1 membrane, not a bilayer
• more tubular cristae is typically seen in a steroid producing cell
• shelf like cristae is seen in hepatocytes, where they produce protein
• microtubules are tracks on which organelles can move along
• microfilaments are made out of actin and protect against abrasian
• glycogen doesnt stain as it has no charge, can be shown through PAS staining
• ribosomes are the binding site for mRNA
• when not involved in cellular processes, ribosome subunits seperate from eachother and ER
• mitochondria are 0.5-1um