Maharashtra BoardEnglish MediumSTD 11 ScienceBiologyCell Structure and Organization3 Marks
Question
What are microbodies? Mention their types and functions.
✓
Answer
Microbodies are minute membrane bound sacs found in both plant and animal cells. Microbodies contain various types of enzymes based on which they are classified into following types:
$1.$ Sphaerosomes:
$a.$ These are found mainly in cells involved in synthesis and storage of fats. For e. g. endosperm of oil seeds.
$b.$ The membrane of sphaerosome is half unit membrane i.e. this membrane has only one phospholipid layer.
$2.$ Peroxisomes:
$a.$ Peroxisomes contain enzymes that remove hydrogen atoms from substrate and produce toxic hydrogen peroxide by utilisation of oxygen.
$b.$ At the same time peroxisome also contains enzymes that convert toxic $H_20_2$ to water. Conversion of toxic substances like alcohol takes place in liver cells by peroxisomes.
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