andy at andy at
Wed Oct 22 15:28:12 EST 1997

On Thu, 16 Oct 1997 21:55:23 -0400, "Jeff" <knight at> wrote:

>In biology class we were discussing lysosomes, and how they can carry
>digestive enzymes to food vacuoles, and digest anything inside the cell.  I
>asked the teacher what it is about the membrane surrounding the lysosome
>that prevents the enzymes from digesting it.  She was unsure of this and I
>am very curious.  If anyone could help out with an explanation that would be
>great!  Thanx!
>- Jeff
>- knight at
Lysosomes are an example of membrane boune organelles. they are
enclosed in a lipid unit membrane.  the enzymes within a lysosome are
proteolitic that is they digest protein - peptide bonds. therfore they
are unable to digest the lipid membrane that encloses them.

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