Cell organelles Flashcards
Rough endoplasmic reticulum
translation and folding of new proteins
manufacture of lysosomal enzymes
site of N-linked glycosylation
Smooth endoplasmic reticulum
steroid, lipid synthesis
examples of cells with extensive SER include those of the adrenal cortex, hepatocytes, testes, ovaries
Golgi apparatus
Modifies, sorts, and packages these molecules that are destined for cell secretion
The addition of mannose-6-phosphate to proteins designates transport to lysosome
Mitochondrion
Aerobic respiration. Contains mitochondrial genome as circular DNA
Nucleus
DNA maintenance
RNA transcription
RNA splicing
the process that removes the intervening, non-coding sequences of genes (introns) from pre-mRNA and joins the protein-coding sequences (exons)
Lysosome
Breakdown of large molecules such as proteins and polysaccharides
Nucleolus
Ribosome production
Ribosome
Translation of RNA into proteins
Peroxisome
Catabolism of very long chain fatty acids and amino acids
Results in the formation of hydrogen peroxide
Proteasome
Along with the lysosome pathway involved in degradation of protein molecules that have been tagged with ubiquitin