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  • Created by: marina
  • Created on: 13-05-10 17:20


1.What is the equation for speed?

2.What happens to the object on a speed time-graph...

a. If the line is horizontal?

b. If the line is a straight diagonal line

3.What does it mean if the line is steeper on a distance-time graph?

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2. On a speed-time graph....

a.When an object is stationary the line is horizontal (the distance does not change).

b.When moving at a steady speed it's a straight diagonal line -

3.steeper means faster (bigger distance in the same time).

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1.What is the word and symbol equation for photosynthesis

2.Name 4 ways plants use glucose.

3.What happens to the enzymes controlling photosynthesis if the temperature approaches 45'C?

4.Fill in the gaps:

________________ is insoluble so it ________________ affect the concentration inside cells.

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1.Carbon dioxide and water, in the presence of light and chlorophyll, goes to glucose and oxygen (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ocr_gate_lightenergy.gif)

6 CO2 plus 6 H2O, in the presence of light and chlorophyll, goes to C6 H12 O6 plus 6 O2. (http://www.bbc.co.uk/schools/gcsebitesize/science/images/ocr_gate_lightenergy2.gif)

2.Glucose can be converted into.....energy, proteins(for growth and repair), cellulose(for plant cell walls), starch, fats, oils(stored in seeds).

3.Enzymes start to be destroyed so rate of photosynthesis declines to zero.

4.Starch is insoluble so it doesn't affect the concentration inside cells.

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Cell enlargement-main method by which plants gain height

Cell division-mainly restricted to tips of roots and shoots

Stem cells are undifferentiated animals cells that can specialise and develop into different types of cells, tissues and organs.

Unlike animal cells, plant cells retain the ability to differentiate or specialise throughout their lives.

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