B1 Biological Molecules OCR Gateway (9-1)

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  • Created by: Aleena
  • Created on: 04-04-18 11:36
What are biological molecules?
molecules found in living organisms-things like carbohydrates,proteins,lipids,etc.
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Can biological molecules be used as a substrate in respiration?
Yes-carbohydrates,proteins & lipids can be broken down so that energy can be transferred to ATP through respiration-the energy stored in ATP is then available for the cell to use.
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What elements are in carbohydrate molecules?
Carbon,Hydrogen & Oxygen
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Are carbohydrates polymers?Why?
Yes, because they are made up of a chain of lots of simple sugar monomers like glucose or fructose
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Give some names of large, complex carbohydrate molecules
Starch & Glycogen
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How can we break down the Carbohydrate back into the simple sugars again?
The polymer molecules can be broken down back into sugars again when the chemical bonds between monomers are broken-what happens in respiration
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What are the two parts of the body where carbohydates are broken down
Carbohydrates are broken down by enzymes in the mouth & small intenstine
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Are proteins polymers?Why?
Yes because they are made up of long chains of amino acids(monomers)
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What elements are in amino acids?
Carbon, Nitrogen, Hydrogen, and Oxygen
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In the body where are proteins broken down?
In the stomach & small intestine by enzymes
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What are lipids?
fats & oils
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Are lipids polymers?Why?
No because they don't form a long chain of repeating units
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What do Lipids contain?
Glycerol & 3 Fatty acids
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What elements are in lipids?
Carbon,Hydrogen & Oxygen
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In the body where are lipids broken down?
By enzymes in the small intestine
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When lipids are broken down, will they make the solution they're in more acidic or alkali?
More acidic-as lipids contain fatty acids (it will have a lower pH)
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Other cards in this set

Card 2

Front

Can biological molecules be used as a substrate in respiration?

Back

Yes-carbohydrates,proteins & lipids can be broken down so that energy can be transferred to ATP through respiration-the energy stored in ATP is then available for the cell to use.

Card 3

Front

What elements are in carbohydrate molecules?

Back

Preview of the front of card 3

Card 4

Front

Are carbohydrates polymers?Why?

Back

Preview of the front of card 4

Card 5

Front

Give some names of large, complex carbohydrate molecules

Back

Preview of the front of card 5
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