membrane bound VS non-membrane bound organelles

Question 1

which organelles are membrane-bound

Answer 1

-nucleus
-mitochondria
-chloroplasts
-RER,SER
-golgi apparatus
-vesicle
-lysosome
-cilia
-flagella
-cell-surface membrane
-large permanent vacuole

Question 2

which organelles are not membrane-bound

Answer 2

-ribosomes
-nucleolus
-centrioles
-microtubules
-cytoskeleton
-microvilli
-cell wall