ATP is sometimes referred to as an 'immediate energy source'. Explain why.
ATP releases energy very rapidly. This energy is released in a single step and is transferred directly to the reaction requiring it.
1 of 6
Explain how ATP can make an enzyme-catalysed reaction take place more readily.
ATP provides a phosphate that can attach to another molecule, making it more reactive and so lowering its activation energy. As enzymes work by lowering activation energy they have less 'work' to do and so function more readily.
2 of 6
State three roles of ATP in plant cells.
Any three from: building up macromolecules/ active transport / secretions/ activation of molecules
3 of 6
Name the three ways in which the synthesis of ATP from ADP occurs.
Give three examples of why organisms require energy.
Three from the following: metabolism/ movement/ active transport/ maintenance, repair and division of cells/ production of substances/ maintenance of body temperature
5 of 6
Describe the three stages of the flow of energy through living systems.
1. Light energy from the sun is converted by plants into chemical energy during photosynthesis. 2. The chemical energy is converted into ATP during respiration in all cells. 3. ATP is used by cells to perform useful work.
6 of 6
Other cards in this set
Card 2
Front
Explain how ATP can make an enzyme-catalysed reaction take place more readily.
Back
ATP provides a phosphate that can attach to another molecule, making it more reactive and so lowering its activation energy. As enzymes work by lowering activation energy they have less 'work' to do and so function more readily.
Card 3
Front
State three roles of ATP in plant cells.
Back
Card 4
Front
Name the three ways in which the synthesis of ATP from ADP occurs.
Back
Card 5
Front
Give three examples of why organisms require energy.
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