Peroxisomes

Question 1

-im both animals and plants
-works closely with lysosomes
-for degradation/breakdown

Answer 1

peroxisomes

Question 2

peroxisomes in liver and kidney (for ____ ).

Answer 2

detoxification

Question 3

functions of peroxisomes

Answer 3

-breakdown by oxidation of fatty acids to sugar
-breakdown of H202, catalyzed by enzyme catalase
-breakdown of excess purines to uric acid
-synthesis of cholesterol
-synthesis of bile acids
-synthesis of lipids used to make myelin

Question 4

-peroxisomes are not made
-deficiency/defect in enzymes

Answer 4

peroxisomal biogenesis disorder

Question 5

-defect in importing proteins into peroxisomes, giving rise to “ghost peroxisomes”
-leads to empty peroxisomes

Answer 5

zellweger syndrome

Question 6

-autosomal recessive disorder on chromosome 10
-accumulation of phytanic acid in the brain, tissues, and blood.
-defective peroxisomal enzyme
-short 4th toe

Answer 6

refsum’s disease

Question 7

-deficiency in B-oxidation of long chain fatty acids

Answer 7

ALD (Adrenoleukodystrophy)

Question 8

-little “transfer ships”
-storage of ions, pigments, proteins, and defensive compounds

Answer 8

vacuoles and vesicles

Question 9

phagocytosis and fuse with lysosomes

Answer 9

food vacuoles

Question 10

in freshwater protists, pump excess H2O out of cell

Answer 10

contractile vacuole

Question 11

found in many mature plant cells

Answer 11

central vacuoles