Lysosomes vary in shape and size, making them difficult to identify.
What describes a lysosome?
1 )
a vesicle containing enzymes, enclosed by a double membrane, that is budded off the endoplasmic reticulum
2 )
a vesicle containing hydrolytic enzymes and surrounded by a single membrane, found only in phagocytes
a vesicle enclosed by a single membrane, containing several different hydrolytic enzymes that may act inside or outside the cell
4 )
a vesicle surrounded by a double membrane, containing enzymes which can hydrolyse damaged organelles in a cell
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