Oct Half Term Revision Qs

Question 1

Describe the test for lipid

Answer 1

Add ethanol/alcohol then add water and shake/mix

White/milky (emulsion)

Question 2

How is a triglyceride formed?

Answer 2

One glycerol and three fatty acids;

Condensation (reactions) AND removal of three molecules of water;

Ester bond(s) (formed);

Question 3

How is an ESTER Bond formed in a phospholipid?

Answer 3

Condensation (reaction) /Loss of water

Between of glycerol and fatty acid;

Question 4

Describe the test for lipid for a piece of food

Answer 4

Dissolve in alcohol (ethanol), then add water;
White emulsion shows presence of lipid.

Question 5

Describe Binary Fission

Answer 5

Replication of (circular) DNA;

Replication of plasmids;

Division of cytoplasm (to produce daughter cells);