Biology Revision

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  • Created by: Cammie
  • Created on: 17-05-13 09:55
What do antibodies consist of?
Amino acids
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What hold amino acids together?
Peptide bonds
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Why does cholera only affect epithelial cells in the small intestine?
Their protein shape is complementary to the receptor
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Addition of water
Hydrolysis reaction
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Removal of water
Condensation reaction
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What are pathogens?
Bacteria, fungi, viruses
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How do pathogens cause disease
Damage cells, produce toxins
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What are monoclonal antibodies produced from?
Single clone of B-cells
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Where should cylinders be cut from?
Root of the plant, through the same proportion of tissue
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Resolution of light microscope?
200nm
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Resolution of electron microscope?
0.0001micrometers
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Magnification of electron microscope?
x1500000
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What does a TEM do?
Examines ultrastructure
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What dimension does a TEM see in?
Two-dimensional
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What does a SEM do?
Reveals surface detail
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What dimension does a SEM see in?
Three-dimensional
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What's Fick's Law?
Rate of diffusion = (surface area x concentration gradient) / thickness of exchange surface
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For efficient diffusion, what should the surface area be?
Large
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For efficient diffusion, what should the concentration gradient be?
Large
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For efficient diffusion, what should the exchange surface be?
Thin
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For efficient diffusion, what should the temperature be?
High
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Pulmonary ventilation equals?
Tidal volume x breathing rate
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Why do you homogenise tissues in cell fractionation?
To break open the cells, release the organelles
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Why do you filter the suspension in cell fractionation?
Remove cell debris
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What is an antigen?
A protein that causes an immune response
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Why can't an enzyme supplement be taken by mouth?
It's a protein, and would be digested by other enzymes
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Why are volunteers divided randomly?
To avoid bias
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Why are control groups used?
To ensure the results you get, down to the variable you're testing
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Other cards in this set

Card 2

Front

What hold amino acids together?

Back

Peptide bonds

Card 3

Front

Why does cholera only affect epithelial cells in the small intestine?

Back

Preview of the front of card 3

Card 4

Front

Addition of water

Back

Preview of the front of card 4

Card 5

Front

Removal of water

Back

Preview of the front of card 5
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