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4.6 Microbodies and Vacuoles
The peroxisome is an example.
vacuoles are large storage areas in cells.
The peroxisomes are created by free ribosomes and transported from the cytoplasm to the lysosomes.
H2O2 is a toxic molecule when the peroxisome oxidizes fatty acids.
The catalase that breaks down H2O2 is found in peroxisomes.
You can see the reaction when you apply hydrogen peroxide to a wound.
Peroxisomes are part of the metabolism.
They are especially prevalent in cells that break down lipids.
Some peroxisomes break down fats while others produce bile salts.
The long-chain fatty acids accumulate in the brain.
There are peroxisomes in plant cells.
In germinating seeds, they oxidize fatty acids into molecule that can be converted to sugars.
The peroxisomes can use up oxygen and release carbon dioxide in leaves.
Peroxisomes can oxidize various organic substances.
vacuoles are larger than membranous sacs.
The contractile vacuoles of some protists are used for ridding the cell of excess water.
Substances are usually stored by vacuoles.
Plants need vacuoles to function.
Water, sugars, and salts are part of the plant vacuoles.
The red, blue, and purple colors of flowers and leaves are caused by the pigments.
The toxic substances help protect the plant.
Plants have a large central vacuole that can take up to 90 percent of the cell's volume.
The vacuole is filled with a watery fluid that supports the cell.
The central vacuole provides structural support for plant cells.
A plant cell can grow quickly.
A plant cell will eventually produce more cytoplasm.
The large central vacuole of plant cells has many functions.
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