Biology

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  • Created by: Amara
  • Created on: 08-09-13 14:17
What is yeast
Yeast is a single celled organism, yeast is a fungi therefore it cant photosynthesise, it uses glucose for energy.
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Name the gas that causes bread to rise
CO2
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What is bacteria used to make
yoghurt
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What is Gashol
Petrol mixed with alchol, an alternative gas for vehicles
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What sugar does milk contain
lactose
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what is a renewable souce of energy
A source of energy that will never run out
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What is Diffusion
The movement of molecules from a high concentrationn to a low concentration
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Where does oxygen move from and to
Oxygen moves from our air sacs in our lungs into red blood cells by diffusion
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What is a hyPERtonic solution
A stronger solution that has more substances disolved in it than another
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What is a hyPOtoic solution
A weaker solution that has less substances dissolved in it than another
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What is a isotonic solution
If both solutions are the same strength
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What is Osmosis
The movement of molecules from a high concentrationn to a low concentration through a selectively permable membrane
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What are enzymes
Enzymes are Biological catalysts
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What are Catalysts
Substances that speed up chemical reactions
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What are substrate molecules
The substance enzyme acts on
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What is a product
The product at the end
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What is meant by the active site
The slot in the enzyme for the substrate
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What is meant by 'specific'
Each enzyme can only catalayse one reaction because their active site only allow 1 SPECIFIC substrate
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What is activation energy
Speeding up chemical reactions and REMAIN UNCHANGED BY lowering the energy input that is required
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What's Metabolism
All the chemical reactions takeing place in an organism
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What are the two types of chemical reactions
Synthesis (build up) reactions and Degredation (break down)
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What does Amylase do
Amylase is an enzyme that catalyses the breakdownnbof starch ( the substrate to Maltose)
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What can Maltose be broken down to
Glucose
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What is Catalase
An enzyme found in many cells but particulary in Liver cells
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What does Catalase break down
It Catalyses the breakdown of hydrogen peroxide
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What is the equation for hydrogen peroxide
Hydrogen peroxide ----------------> water + oxygen
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What is the enzyme found in potatoes
Phosphorolase
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Other cards in this set

Card 2

Front

Name the gas that causes bread to rise

Back

CO2

Card 3

Front

What is bacteria used to make

Back

Preview of the front of card 3

Card 4

Front

What is Gashol

Back

Preview of the front of card 4

Card 5

Front

What sugar does milk contain

Back

Preview of the front of card 5
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