bits and bobs

Question 1

what are the different biological molecules?

Answer 1

-carbohydrates
-proteins
-lipids

Question 2

what are the monomers of carbohydrates?

Answer 2

glucose (sugar unit)

Question 3

what are the monomers of proteins?

Answer 3

amino acids

Question 4

what are lipids made of?

Answer 4

they are not polymers and are made of 3x fatty acids and 1x glycerol

Question 5

what are the polymers of carbohydrates?

Answer 5

-starch, storage of glucose in plants
-glycogen, storage of glucose in animals
-cellulose, plant cell wall

Question 6

what are the polymers of proteins?

Answer 6

-enzymes
-hormones
-structural

Question 7

what are the enzymes of carbohydrates?

Answer 7

-carbohydrase
-amylase (breaks down starch)

Question 8

what are the enzymes of proteins?

Answer 8

protease

Question 9

what are the enzymes of lipids?

Answer 9

lipase

Question 10

describe the test for glucose (reducing sugars)

Answer 10

-Benedicts
-add equal volumes of solution and benedicts
-boil in a water bath

Question 11

describe the colour change for benedicts solution

Answer 11

blue–>brick red
(any colour change=positive, he darker the colour is more concentrated)

Question 12

describe the test for starch

Answer 12

-Iodine
-add iodine to the solution

Question 13

describe the colour change for iodine

Answer 13

orange–>blue/black

Question 14

describe the tests for proteins

Answer 14

-Biurets
-add equal volumes of solution and biuret

Question 15

describe the colour change for biurets

Answer 15

blue–>violet

Question 16

describe the test for lipids

Answer 16

-emulsion for lipids
-add ethanol to solution
-shake vigorously
-poor into water

Question 17

describe the colour change for ethanl

Answer 17

colourless–>cloudy