Test

Question 1

Quadrats process

Answer 1

1)Randomly generate quadrats
2)Place quadrats
3)Count number within quadrats
4)Repeat 10 times and calculate the average
5)Times the average number of per quadrat by the area to find the population size

Question 2

What is the test for protein?

Answer 2

-Add sodium hydroxide and a few drops of copper sulphate (biuret reagent)
-If protein is present, it will turn from blue to lilac

Question 3

What is the difference between starch and glucose?

Answer 3

-Glucose is a simple sugar and it is a single molecule, while starch is a complex carbohydrate made up of many glucose units linked together

Question 4

What is digestion?

Answer 4

Digestion is the breakdown of large insoluble molecules into small soluble molecules

Question 5

Lipase

Answer 5

-An enzyme
-It’s substrate is lipid
-It’s product is glycerol and fatty acids
-Made in the pancreas
and released into the
small intestine
-Lipase helps digest fats/lipids into smaller molecules, glycerol and fatty acids, that can be absorbed by the small intestine

Question 6

Bile

Answer 6

-Bile is produced by the liver, stored in the gall bladder and released into the small intestine to neutralise the
acid
-Bile emulsifies fat by breaking it into smaller droplets so lipase can digest it faste