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Worksheets

Biology Experiments

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

Benedict's solution is used to test for

a)

Reducing Sugar

b)

Starch

c)

Fat

d)

Protein

2.

Biuret reagent is used to test for

a)

Protein

b)

Reducing sugar

c)

Starch

d)

Fat

3.

In testing for fat, a ______________ stain indicates a positive result

a)

Translucent

b)

Transparent

4.

In the test for reducing sugar, which of the following is correct?

a)

No heat needed

b)

Heat but do not boil

c)

Boil

5.

If eyepiece lens is x10 and objective lens is x40. What is the total magnification

a)

x50

b)

x400

c)

x4

d)

x40

6.

In preparing a slide for examination under the microscope, how did you lower the coverslip?

a)

45 degree angle

b)

90 degree angle

c)

No angle

d)

30 degree angle

7.

Methylene Blue is used to stain cheek cells

a)

True

b)

False

8.

In extracting DNA from plant tissue, washing up liquid was used to _____________

a)

Break cell walls

b)

Break down cell membranes

c)

Clump DNA together

d)

Stop DNA from breaking down

9.

In extracting DNA from plant tissue, salt was used to _____________

a)

Break cell walls

b)

Break down cell membranes

c)

Clump DNA together

d)

Stop DNA from breaking down

10.

In extracting DNA from plant tissue, ice bath was used to _____________

a)

Break cell walls

b)

Break down cell membranes

c)

Clump DNA together

d)

Stop DNA from breaking down

11.

Ice (freezer) cold ethanol was used because DNA is __________ in ice cold ethanol

a)

Soluble

b)

Insoluble

12.

In investigating the effect of pH on the rate of enzyme action, the enzyme used was _________________

a)

Catalase

b)

Amylase

c)

Hydrogen Peroxide

d)

Celery

13.

In investigating the effect of pH on the rate of enzyme action, the enzyme was extracted from ___________

a)

Catalase

b)

Onion

c)

Hydrogen Peroxide

d)

Celery

14.

The rate of enzyme action was measured by___________

a)

Counting the number of bubbles per min

b)

Measuring the volume of foam

c)

Measuring the volume of foam produced per min

d)

Finding the mass

15.

When using yeast to prepare alcohol, what other product was produced?

a)

CO2

b)

H20

c)

O2

d)

Lactic acid

16.

Name the plant used in investigating the effect of light intensity on the rate of photosynthesis

a)

Elodea

b)

Onion

c)

Celery

d)

Geranium

17.

The rate of photosynthesis was measured by___________

a)

Counting the number of bubbles per min

b)

Measuring the volume of foam

c)

Measuring the volume of foam produced per min

d)

Counting the bubbles

18.

When demonstrating osmosis, what led you to conclude that osmosis had occurred?

a)

Tube got heavier

b)

Tube stayed the same

c)

Tube got lighter

19.

Parafilm tubing is used to demonstrate osmosis

a)

True

b)

False

20.

In the investigation on the effect of exercise on pulse rate, what was the control?

a)

Pulse rate at rest

b)

Water

c)

Pulse rate standing

d)

Pulse rate when exercising

21.

When immobilising an enzyme, the gel substance used to trap the enzyme is called ________

a)

Sodium Alginate

b)

Calcium Chloride

c)

Hydrogen Peroxide

d)

Hydrochloric Acid

22.

When immobilising an enzyme, the second substance used to make the gel insoluble is called ________

a)

Sodium Alginate

b)

Calcium Chloride

c)

Hydrogen Peroxide

d)

Hydrochloric Acid

23.

How did you know that digestive activity of seeds had occurred on one of your investigation plates?

a)

Plate stained blue-black

b)

Plate stayed the colour of Iodine

c)

Area under/around the seeds stayed the colour of Iodine, the rest of the plate turned blue-black

d)

Area under/around the seeds turned blue-black, the rest of the plate stayed the colour of Iodine

24.

How did you know that digestive activity of seeds had NOT occurred on one of your investigation plates?

a)

Plate stained blue-black

b)

Plate stayed the colour of Iodine

c)

Area under/around the seeds stayed the colour of Iodine, the rest of the plate turned blue-black

d)

Area under/around the seeds turned blue-black, the rest of the plate stayed the colour of Iodine

25.

In science experiments, how can temperature be kept constant?

a)

Water bath

b)

Hot Plate

c)

Bunsen Burner

d)

Room temperature

26.

In science experiments, what is used to keep the pH constant?

a)

Buffer Solution

b)

pH meter

c)

Universal Indicator

d)

Litmus paper

27.

Plant enzymes work best at

a)

25 degrees Celcius

b)

37 degrees Celcius

c)

10 degrees Celcius

d)

60 degrees Celcius

28.

Select the 3 factors needed for germination

a)

Water

b)

Light

c)

Oxygen

d)

Suitable Temperature

e)

Food

29.

How did you transfer cheek cells to a slide for examination under the microscope?

a)

Cotton Swab

b)

Forceps

c)

Spatula

d)

Inoculating Loop

30.

In the investigation on the effect of heat denaturation on the rate of enzyme activity, how did you denature the enzyme?

a)

Heat the enzyme

b)

Boil the enzyme

31.

In the investigation on the effect of IAA on plant tissue, what plant tissue did you use?

a)

Radish seeds

b)

Onion

c)

Celery

32.

In the investigation on the effect of IAA on plant tissue, what did you use as a control?

a)

Water

b)

Concentrated IAA

c)

Diluted IAA

d)

No seeds

33.

In the investigation on the effect of IAA on plant tissue, at high concentrations the ________________

a)

Shoot elongates

b)

Root elongates

34.

In the investigation on the effect of IAA on plant tissue, at low concentrations the ________________

a)

Shoot elongates

b)

Root elongates

35.

Opening lids of petri dishs for the least amount of time possible is an example of

a)

Sterilisation

b)

Asespis

36.

Washing the bench before and after each experiment is an example of

a)

Sterilisation

b)

Asepsis

37.

Placing equipment in a pressure cooker or oven at 160 degrees Celsius for 1 hour is an example of

a)

Sterilisation

b)

Asepsis

38.

In carrying out the heart dissection, how did you expose a semi-lunar valve?

a)

Cut open Aorta

b)

Cut open Pulmonary Vein

c)

Cut open Left Ventricle

d)

Cut open Right Atrium

39.

In ecological studies, how would you identify plants or animals?

a)

Poster

b)

Identification Key

c)

Internet

d)

Guess

40.

This piece of ecological equipment is used to

a)

Catch butterflies

b)

Collect insects in long grass

c)

Catch bees

d)

Catch fish

41.

Which image would you expect to see when viewing a dicot stem under the microscope?

a)

Image on the left

b)

Image on the right

42.

To carry out a quantitative survey of animals you would use a ________________

a)

Mammal Trap

b)

Quadrat

c)

Line Transect

d)

Belt Transect

43.

When using a quadrat, if you record if a species is present or absent, that is measuring _______________

a)

Percentage Cover

b)

Percentage Frequency

44.

When using a quadrat, if you record the number of times each plant species touches a point of intersection, that is measuring _______________

a)

Percentage Cover

b)

Percentage Frequency

45.

When measuring the abiotic factor light intensity you would use a

a)

light meter

b)

thermometer

c)

hygrometer

d)

anemometer

46.

When measuring the abiotic factor humidity you would use a

a)

light meter

b)

thermometer

c)

hygrometer

d)

anemometer

47.

When measuring the abiotic factor wind speed you would use a

a)

light meter

b)

thermometer

c)

hygrometer

d)

anemometer

48.

In investigating the effect of pH on the rate of enzyme action, the substrate used was _________________

a)

Catalase

b)

Amylase

c)

Hydrogen Peroxide

d)

Oxygen

49.

In investigating the effect of temperature on the rate of enzyme action, the product was _________________

a)

Catalase

b)

Amylase

c)

Hydrogen Peroxide

d)

Oxygen

50.

Potassium Iodide and Sodium Hypochlorite are used to test for ______________

a)

Alcohol

b)

Enzyme Immobilisation

c)

DNA Extraction

d)

Protein