INTRODUCTION TO MICROSCOPY CELL BIOLOGY
PEROXISOMES
Question
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Detailed explanation-1: -To fulfil these metabolic functions, mammalian peroxisomes harbour some 50 different enzyme activities. Several of these enzymes belong to the peroxisomal fatty acid oxidation system.
Detailed explanation-2: -Peroxisomes are found in all eucaryotic cells. They contain oxidative enzymes, such as catalase and urate oxidase, at such high concentrations that in some cells the peroxisomes stand out in electron micrographs because of the presence of a crystalloid core (Figure 12-31).
Detailed explanation-3: -A typical human cell has 102–103 peroxisomes distributed throughout its cytoplasm, where they form contacts with other organelles, particularly the ER, lipid droplets, and mitochondria.
Detailed explanation-4: -Some of the enzymes present in the matrix are pyruvate dehydrogenase, citrate synthase, aconitase, isocitrate dehydrogenase, fumarase, and malate dehydrogenase are some of the enzymes present in the mitochondrial matrix.