12 Questions
What is the main function of peroxisomes in plants found in leaves?
Play a role in photorespiration by using up O2 and liberating CO2
What distinguishes glyoxysomes from regular peroxisomes in plants?
Their role in converting lipids into sugars during seed germination
What is the significance of the glyoxylate cycle in plants?
It enables the conversion of stored lipids into sugars for growth
Why are animals unable to convert fatty acids into carbohydrates like plants do?
The glyoxylate cycle is not present in animal cells
What is the primary function of rubisco enzyme in plant metabolism?
Convert O2 into CO2 during photosynthesis
In what process does rubisco sometimes add O2 instead of CO2?
Photorespiration
What is a major function of the oxidative reactions carried out in peroxisomes?
Breakdown of fatty acid molecules by beta oxidation
In which cellular component are cholesterol and dolichol synthesized in animal cells?
Peroxisomes
Where are plasmalogens important membrane components found, particularly in the body?
Heart and brain
What is a family of phospholipids in which one of the hydrocarbon chains is joined to glycerol by an ether bond?
Plasmalogens
What is the process by which fatty acid molecules are shortened sequentially by blocks of two carbon atoms at a time in peroxisomes?
Beta oxidation
Which cells exclusively carry out beta oxidation in peroxisomes rather than mitochondria?
Yeast and plant cells
Test your knowledge on the functions of peroxisomes, including their role in oxidation reactions and lipid biosynthesis. Learn about the synthesis of cholesterol, dolichol, bile acids, and plasmalogens in peroxisomes.
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