Lecture++2-+contd.

Lecture++2-+contd. - Vacuoles play many roles in plant...

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Vacuoles play many roles in plant cells - produced from provacuoles - contain water, inorganic ions, organic acids, sugars enzymes, secondary metabolites - help maintain turgor pressure - Other types of vacuoles - protein bodies - lytic vacuoles - autophagosomes
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1.17 (A) Mitochondrion; (B) Mitochondria from a leaf cell of Bermuda grass Mitochondria are the sites of respiration
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Plastids - Chloroplasts - Chromoplasts - Leucoplasts (e.g. Amyloplasts)
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Choloroplasts are the sites of photosynthesis
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1.19 Chromoplast from tomato ( Lycopersicon esculentum ) fruit Chloroplasts can be converted into chromoplasts during the senescence process
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1.20 Electron micrographs illustrating several stages of plastid development Plastid development is regulated by light Proplastid of roots Chloroplast of Mesophyll cell Etioplast
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1.21 Electron micrograph of a peroxisome from a mesophyll cell Microbodies are specialized for metabolic roles. e.g. Peroxisomes (metabolize peroxide) Glyoxysomes (convert fatty acids into sugars)
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1.22
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