Q) Describe the differences between lysosome and ribosome
Key ideas | Main points | |
1) Memorize the 6 features for comparison first : · Size · No. of subunits · Content within · Origin · Location in cell · Function 2) Then memorize specific features for each organelle | Lysosome · 0.1-0.5μm · made up of single unit, bound by single membrane · Consists of hydrolytic enz (e.g...) · Originate fr Golgi body · Exist freely in cytoplasm · Fn : i) Fuse w endocytic vesicles + digestion + absorbed + assimilate into cell ii) Autophagy ... iii) Autolysis ... | Ribosome · 20-30nm (smaller) · 2 subunits (large, small), not membrane bound, large subunit contains peptidyl transferase · Each subunit consists of rRNA + protein in about equal quantities · Origin: rRNA component fr nucleus, protein component fr cytoplasm - subunits form in nucleus but assemble to ribosome in cytoplasm · Exist freely or attached to ER · Fn : i) Protein syn, peptide bond form b/w aa |
Comments: (i) Visualize the answer with the aid of a labelled picture of both organelles (refer to earlier post for URL) (ii) Verbalize the answer + write down the main points w/o referring to the answer (use abbreviations) (iii) Read again within the next 24h & once more within 72h (do not spend more than 10min) (iv) Typo error in the book – ‘each subunit....in roughly equal quantities’ | ||
No comments:
Post a Comment