28. What are the
morphological, chemical and
functional similarities and
differences between
lysosomes and peroxisomes?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Similarities: lysosomes and
are small membranous that
contain enzymes enclose residual
substances internal or external
degrading them. Differences:
have digestive enzymes
() that break substances
be digested into molecules;
peroxisomes contain that
degrade mainly -chained fatty acids
and acids and that
toxic agents including ; within
peroxisomes there the enzyme
catalase, for the oxidation
organic compounds by
peroxide (H2O2) and, this
substance is excess, by the
of the peroxide water
and molecular .