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Name and briefly describe the function of three organelles possessed by a plant cell. State an organelle that is present in a plant cell but not in an animal cell.

Plant cells possess a membrane bound nucleus that acts as the control centre of a cell. They also possess a vacuole which controls water balance in the cell. The chloroplasts are the site of photosynthesis a...
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Answered by Katy A. Biology tutor
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How do antibodies work?

Foreign cells that enter the body have antigens on the outside of them which will be complementary to a specific antibody. The antibody can bind to the antigen, forming an antigen-antibody complex, and this ...
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Answered by LORNA B. Biology tutor
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introduce the romantic movement in the italian literature of the 18th century

The romantic movemet was a cultural trend developed during the 18th century in Germany and then it spreaded all around Europe. It was based on the expression of the deep feeling of the author and his connect...
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Answered by Camilla F. Italian tutor
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Explain why C-12 and C-14 are isotopes of Carbon. (3 marks)

Same number of protons (6 protons - atomic number) and different number of neutrons (6 neutrons in C-12 and 8 neutrons in C-14).
CS
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Draw diagrams to represent the particles in each state: solid, liquid, and gas.

The box for the solid should be an orderly set of circles with no gap between each one. The box for the liquid represents molecules with more energy but not all bonds have been broken. Therefore the box shou...
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Answered by Alex V. Physics tutor
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