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Biology, 22.06.2019 07:00
What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material
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Biology, 23.06.2019 00:10
Which pair of chromosomes determines sex in humans? a.15th b.1st c.23rd
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Biology, 23.06.2019 00:30
Biology students used raw eggs in an experiment on tonicity and osmosis. the students put their eggs into vinegar to remove the shells. the vinegar was used to remove the shell from the raw egg. what other effect(s) did the vinegar have on the egg?
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Biology, 23.06.2019 05:30
Proteins a. contain carbon, hydrogen, oxygen and nitrogen b. consists of amino acids c. are derived from the fruits and vegetables c. are part of antibiotics
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