RPA's

Question 1

If your testing for starch, what chemical would you use?

Answer 1

Iodine

Question 2

If there is starch present in an iodine solution, what colour will it go?

Answer 2

Blue/Black

Question 3

What chemical do you use to test for sugars?

Answer 3

Benedict’s Solution

Question 4

Is there is sugar present in a Benedict’s solution, what colour will it go?

Answer 4

Brick red

Question 5

What chemical do you use to test for proteins?

Answer 5

Biuret solution

Question 6

If there are proteins in a biuret solution, what colour will it go?

Answer 6

Purple

Question 7

What chemical is used to test for fats/lipids?

Answer 7

Ethanol

Question 8

If there are fats or lipids in an ethanol solution, what colour will it go?

Answer 8

Cloudy white layer

Question 9

Why do you put iodine on a slip when you study an onion?

Answer 9

Becuase it stains the parts of the cell so you can see them clearere

Question 10

What is an independent variable?

Answer 10

The thing you are changing

Question 11

What is a dependent variable?

Answer 11

The thing you are measuring

Question 12

What is a control variable?

Answer 12

The things you are keeping the same