What 3 things do plant cells have that animal cells don't?
Cell wall, Permanent vacuole, chloroplasts.
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What is diffusion?
Diffusion is the net movement of particles from an area of high concentration to an area of low concentration.
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How is a palisade leaf cell adapted for photosynthesis?
A) lots of chloroplasts at the top - nearer the light. B) tall so large surface area for absorbing CO2. C) thin shape means more can be packed in at the top.
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Where is the genetic material found in: a) bacterial cells & b) animal cells?
a) Floats in the cytoplasm & b) Nucleus
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How is a sperm cell adapted to swimming to an egg cell?
- Long tail to swim -Middle section full of mitochondria for energy -Acrosome provides digestive enzymes to break down the layers of the egg.
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a)What is a Tissue? & b) What is an Organ?
a) A group of similar cells that work together to carry out a particular function. b) a group of different tissues that work together to perform a certain function.
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Give 5 environmental factors that can affect the distribution of organisms
Temperature, Amount of Light and availability of: Water, O2 + CO2, nutrients.
7 of 10
What 3 substances can diffuse through cell membranes? & 2 that cannot!
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