Cells, tissues and organs quiz

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1. How is a leaf adapted to carry out photosynthesis.

  • Packed with chloroplasts. Closely packed cells to efficiently absorb sunlight.
  • Packed with chloroplasts. Have a tall structure to obtain more sunlight.
  • Greasy layers to stop water loss. Flat leaf to get more oxygen.
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2. When, and in which direction, will diffusion take place in solutions and in gases?

  • When particles are all together they diffuse into a cell together.
  • Diffusion will take place when particles are seperated by a membrane the particles will diffuse from an area of high concentration to an area of low concentration.
  • When particles are seperated by a memebrane and diffuse from an area of low concentration to an area of high concentration.

3. List the structures which are both found in animal and plant cells.

  • Permanent Vacuole, Mitochondria, Ribosomes, Nucleus, Cytoplasm
  • Cell Membrane, Mitochondria, Ribosomes, Nucleus, Cytoplasm.
  • Chloroplasts, Cell Membrane, Mitochondria, Ribosomes, Cytoplasm
  • Cell Wall, Cell Membrane, Mitochondria, Ribosomes, Nucleus,

4. Give 2 differences between a plant cell and a yeast cell.

  • Plant Cell have chloroplasts. Yeast cells do not have cellulose in the wall.
  • Plant cells have cell membranes. Yeast cells don't have a nucleus.
  • Plant cells have a permanent vacuole. Yeast cells don't have cytoplasm.

5. Where do most chemical reactions take place in a cell?

  • Ribosomes
  • Nucleus
  • Cytoplasm
  • Mitochondria
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