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Grade 10 Molecular Life Sciences notes. R55,00
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Grade 10 Molecular Life Sciences notes.
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This includes all vital information for what you need to know about molecules when you start the section “Life at a Molecular Level” in grade 10. These notes are colourful which makes them easier to remember :)

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  • November 26, 2021
  • 3
  • 2019/2020
  • Interview
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Phosphate lipid
Phospholipid
This lipid is found in cell membranes.
Emulsion Test to test for lipids
95% ethanol+ distilled water. If cloudy positive result if not it’s negative
Lipids can’t mix with water.




I




Proteins
Carbon, hydrogen , oxygen nitrogen and sometimes iron phosphorus or sulfur
Amino acids which are monomers
Acids join to make a long chain which makes protein the
polymer
Make helix protein
Changes in ph+ high temperatures
Example cooking egg
Dormant is denatured like a cooked egg
Cytoplasm made of proteins
Enzymes are proteins
Carry antibodies to protect
Hormones are protein
To test for protein there is the biuret test add copper sulphate + half a teaspoon of sodium hydroxide. If blue to
violet it’s then positive.

Enzymes
Types of proteins
Speeds up chemical reactions of life
No enzymes = too slow to react then you die
Destroyed above 40°Celsius
Enzymes are catalysts
Catalysts seed up chemical reactions either building up or breaking down
Saliva also has enzymes
Ph affects enzymes
Names of enzymes end in A’s
They die over 40°
Has an active site is a shaped part on the surface
Work best at particular ph or temperature levels
2 enzymes
Sub straight
Active site
Substraight is a molecule that needs to be broken down
When broken down and set free they are no longer a substraight they are a product

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