Experiments

Question 1

state the use of biuret solution (a solution containing copper sulfate and sodium hydroxide)

Answer 1

to test for protein

Question 2

state the use of benedict’s solution

Answer 2

to test for glucose

Question 3

when preparing a sample of cells on a microscope why did you place a coverslip over the cells?

Answer 3

to stop the cells from drying out

Question 4

when preparing a sample of cells on a microscope why did you apply methylene blue to the cells?

Answer 4

to stain the cells in order to see clearer under the microscope

Question 5

when extracting DNA from plant tissue why did you use washing up liquid?

Answer 5

to break down the cell membrane

Question 6

when extracting DNA from a plant tissue why did you use freezer cold ethanol?

Answer 6

to make the DNA visible

Question 7

when investigating the effect of IAA on a plant tissue, why did you carry out a serial dilution of an IAA solution?

Answer 7

to see how different concentrations effected the plant seeds

Question 8

when investigating the effect of IAA on a plant tissue, why did you place the seeds on a grid in petri dishes?

Answer 8

to make it clearer and easier to measure the growth rate of the root and shoot