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Plant Structure

Plant Structure
Water content of active protoplasm is

70%
40%
10%
90%

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Plant Structure
In plant cells, which of the following is not a function of the large central vacuoles of plant cells?

Contractile regulation of
Storage of food
Support
Waste storage water content

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Plant Structure
If complex III were incorporated into an artificial lipid vesicle in order to demonstrate it's proton translocating ability in isolation, which of the following would be an appropriate electron donor?

Cytochrome c oxidase
Cytochrome c red
Cytochrome c peroxidase
Ubiquinol (UQH2)

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Plant Structure
The fluid matrix of a cell is called the

endoplasmic reticulum
cytoskeleton
cytosol
nucleus

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Plant Structure
"The universe tends towards maximum disorder" is stated by

second law of thermodynamics
third law of thermodynamics
first law of thermodynamics
None of these

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Plant Structure
Which of the following elements is likely to form the least polar covalent bond with hydrogen?

Carbon
Nitrogen
Oxygen
Phosphorus

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