Science OCR Gateway B flashcards - B3, C3, P3

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What are proteins?
Polymers, relatively large molecules made from much smaller molecules.
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What is an example of a structural protein?
Collagen - main protein found in animal connective tissue - gelatin when boiled
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What is an example of a hormone protein?
Insulin - hormone found in the pancreas, regulating amount of glucose in the blood.
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What is an example of carrier molecule protein?
Haemoglobin - Red protein responsible for the transportation of oxygen in blood.
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What is an example of an enzyme protein?
Amylase - An enzyme, converting starch and glycogen into simple sugars
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What reactions do enzymes (biological catalysts) speed up? (mention 3)
1. Respiration 2. Photosynthesis 3. Protein synthesis
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What is a substrate?
A substance on which enzymes act.
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What mechanism is involved in the enzyme and substrate mechanism?
'Lock and Key' mechanism, where the enzyme will only accept one substrate, as a lock only accepts one type of key.
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What are changes in genes called?
An error in DNA replication, resulting in a change to an organisms genetic blueprint. Some changes are random, others' are caused by environmental factors.
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What is denaturing of an enzymes?
An irreversible change, permanent damage is caused to the enzyme, enzyme no longer works.
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What is Q10?
A measure of the rate of change of a reaction when the temperature is increased by 10 °C.
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What is the calculation of Q10?
Q10 = rate at higher temperature ÷ rate at lower temperature
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Card 2

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What is an example of a structural protein?

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Collagen - main protein found in animal connective tissue - gelatin when boiled

Card 3

Front

What is an example of a hormone protein?

Back

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Card 4

Front

What is an example of carrier molecule protein?

Back

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Card 5

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What is an example of an enzyme protein?

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