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CAX ASB Core practicals unit 1 and 2 Mr Bs half

Total questions: 60

Worksheet time: 32mins

Name
Class
Date
1.

Which stain do you use when viewing onion cells under a microscope?

a)

Methyl Blue

b)

Iodine

2.

Which stain do you use when viewing cheek cells under a microscope?

a)

Methyl Blue

b)

Iodine

3.

Name the part of the microscope labelled number 5

a)

Eyepiece lens

b)

Objective lens

c)

Mirror

d)

Stage

4.

Name the part of the microscope labelled number 3

a)

Eyepiece lens

b)

Focusing wheel

c)

Arm

d)

Stage

5.

Name the part of the microscope labelled number 2

a)

Eyepiece lens

b)

Mirror

c)

Arm

d)

Stage

6.

Name the part of the microscope labelled number 6

a)

Eyepiece lens

b)

Base

c)

Arm

d)

Objective lens

7.

How can more detail be observed in cells?

a)

Use a better light source

b)

Use a higher magnification

c)

Use a larger microscope

d)

Use a lower magnification

8.

Total magnification =

a)

Objective lens/Eyepiece lens

b)

Objective lens x 100

c)

Eyepiece lens x Objective lens

d)

Eyepiece lens x 100

9.

Convert 10cm to mm

a)

1000mm

b)

100mm

c)

1mm

d)

0.1mm

10.

Convert 3000µm into mm

a)

3mm

b)

3cm

c)

0.3mm

d)

30mm

11.

Convert 8cm into µm

a)

80mm

b)

0.0008µm

c)

80,000µm

d)

8,000µm

12.

A single layer of cells needs to be used when observing a specimen under a microscope so that...

a)

...it is easier to handle

b)

...light can pass through the cells

c)

...it is cheaper that using many layers of cells

13.

Why are stains used when observing cells under a microscope?

a)

To make it more exciting

b)

To disinfect the specimen

c)

To make the cells visible under the microscope

d)

To let the light pass through the specimen

14.

Vitamin C is a highly effective...

a)

Free-Radical

b)

Enzyme

c)

Antioxidant

d)

Toxin

15.

Vitamin C is water soluble

a)

True

b)

False

16.

What is this piece of apparatus called

a)

Pipette

b)

Burette

c)

Janette

d)

Cuvette

17.

What is the reading on this burette?

a)

24.0cm3

b)

25.8cm3

c)

24.2cm3

d)

23.9cm3

18.

Calculate the average volume of acid needed for this neutralisation

a)

15.2cm3

b)

15.0cm3

c)

35.5cm3

d)

30.1cm3

19.

The name of the reagent that we de-colourise in the vit C practical is called..

a)

DCPIP

b)

CDPIP

c)

PIPDC

d)

CIPIP

20.

In the vit C prac, what was the volume of reagent used....

a)

1cm3

b)

5cm3

c)

10cm3

d)

15cm3

21.

In the vit C prac, what was the DV?

a)

volume of juice required to decolourise 10cm3 of DCPIP

b)

volume of juice required to decolourise 1cm3 of CDPIP

c)

volume of juice required to decolourise 10cm3 of PIPCD

d)

volume of juice required to decolourise 1cm3 of DCPIP

22.

In the vit C prac, what was the IV?

a)

the different fruit juices

b)

the Spanish orange

c)

the DCPIP

d)

the PIPCD

23.

In the vit C prac, what was the colour change?

a)

blue to clear

b)

blue to purple

c)

purple to clear

d)

purple to blue

24.

In the Benedict's experiment, the IV was?

a)

volume of Benedict

b)

different sugar solutions

c)

serial dilution

d)

volume of water

25.

Which of the following tests for starch?

a)

Iodine

b)

Benedict's

c)

Biuret

d)

Emulsion

26.

Which of the following tests for glucose?

a)

Iodine

b)

Benedicts

c)

Biuret

d)

Emulsion

27.

When starch is present iodine turns...

a)

purple

b)

blue-black

c)

orange

d)

brick red

28.
When large amounts of glucose is present Benedicts turns...
a)
purple
b)
blue-black
c)
brick-red
d)
green
29.

A negative test for glucose will cause Benedicts to stay...

a)

brick red

b)

blue

c)

black

d)

orange

30.

Which chemicals did you mix to test for proteins - biuret test?

a)

Ethanol and water

b)

Iodine and potassium permanganate

c)

Benedicts Solution

d)

Sodium Hydroxide and Copper Sulphate

31.

Is the Benedict's solution test qualitative or quantitative?

a)

quantitative

b)

qualitative

c)

semi quantitative

32.

In the Benedict's solution test, the serial dilution is....

a)

quantitative

b)

for comparing our actual results to

c)

is the actual experiment

d)

qualitative

33.

What are the expected observations for the Benedict's Test for reducing sugars? Blue means...

a)

No sugars present

b)

Trace amounts of reducing sugars present

c)

Low amounts of reducing sugars present

d)

Moderate amounts of reducing sugars present

e)

Large amounts of non-reducing sugars present

34.

What are the expected observations for the Benedict's Test for reducing sugars? Yellow means...

a)

No sugars present

b)

Trace amounts of reducing sugars present

c)

Low amounts of reducing sugars present

d)

Moderate amounts of reducing sugars present

e)

Large amounts of non-reducing sugars present

35.

What are the expected observations for the Benedict's Test for reducing sugars? Brick red means...

a)

No sugars present

b)

Trace amounts of reducing sugars present

c)

Low amounts of reducing sugars present

d)

Moderate amounts of reducing sugars present

e)

Large amounts of non-reducing sugars present

36.

What are the expected observations for the Benedict's Test for reducing sugars? Orange means...

a)

No sugars present

b)

Trace amounts of reducing sugars present

c)

Low amounts of reducing sugars present

d)

Moderate amounts of reducing sugars present

e)

Large amounts of non-reducing sugars present

37.

Specific type of plant tissue that transports water and minerals from the roots, through the stems, to leaves

a)

vascular plant

b)

nonvascular plant

c)

xylem

d)

phloem

38.

Specific type of plant tissue that transports food (sugar) made in the leaves to the entire plant

a)

vascular plant

b)

nonvascular plant

c)

xylem

d)

phloem

39.
Jute is
a)
a man made fibre
b)
an animal fibre
c)
it melts on heating
d)
it is a plant fibre
40.

The photograph below shows an organelle found in some eukaryotic cells. Place a cross in the box that completes each of the following statements The organelle shown in the photograph is

a)

an amyloplast

b)

a chloroplast

c)

a Golgi apparatus

d)

a thylakoid

41.

Which letter identifies a xylem vessel?

a)

W

b)

X

c)

Y

d)

Z

42.

Which letter identifies a sclerenchyma fibre?

a)

U

b)

V

c)

W

d)

Z

43.

The structures labelled J contain starch and are

a)

amyloplasts

b)

mitochondria

c)

nuclei

d)

vesicles

44.

What is letter "A" pointing to?

a)

cuticle

b)

upper epidermis

c)

lower epidermis

d)

palisade mesophyll

45.

What is letter "D" pointing to?

a)

upper epidermis

b)

palisade mesophyll

c)

spongy mesophyll

d)

bundle sheath

46.

Which number is pointing to the xylem of the leaf?

a)

3

b)

4

c)

5

d)

6

47.

Which of the following is pointing to the "guard cell"?

a)

B

b)

C

c)

D

d)

E

48.

Which number is pointing to the stomata?

a)

6

b)

7

c)

8

d)

9

49.

In the plant fibre practical, the IV is ....

a)

source and type of fibre

b)

mass that can be held

c)

The strength of plant fibres

d)

Length of fibre

e)

Humidity

50.

In the plant fibre practical, the DV is ....

a)

source and type of fibre

b)

mass that can be held

c)

The strength of plant fibres

d)

Length of fibre

e)

Humidity

51.

the following process is refared to as ....

plant material should be left to soak in a bucket of water for about a week in order for the fibres to be easily extracted

a)

retting

b)

the method

c)

retching

d)

soaking

e)

extraction

52.
The purpose of streaking a plate is to obtain 
a)
large quantities of bacteria
b)
bacteria in pure culture
53.
Plates should be incubated
a)
agar side up
b)
agar side down 
c)
it doesn't matter
54.
When streaking a plate, the loop should be flamed
a)
At the beginning and end 
b)
 At the beginning and end and between the first 2 zones 
c)
At the beginning and end and between the second and third zone 
d)
At the beginning and end and between each zone 
55.
The bacteriology loop should be sterilized in what part of the Bunsen burner flame? 
a)
in the bright blue cone
b)
just above the bright blue cone
c)
above the flame
d)
at the base of the flame
56.

Which one of the following produces images?

a)

Light Microscope

b)

Transmission Electron Microscope

c)

Scanning Electron Microscope

d)

All of the above

57.

When we challenge tested the plant materials, against ecoli the IV was ....

a)

lawn of bacteria on petri dish

b)

concentration of plant material

c)

zone of inhibition around disc

d)

presence of plant material

58.

When we challenge tested the plant materials, against ecoli the DV was ....

a)

lawn of bacteria on petri dish

b)

concentration of plant material

c)

zone of inhibition around disc

d)

presence of plant material

59.

When we challenge tested the plant materials, against ecoli the 2 CVs were ....

a)

lawn of bacteria on petri dish

b)

concentration of plant material

c)

zone of inhibition around disc

d)

presence of plant material

60.

How do you put SD on a graph?

a)

SD shows the range of results and can not be plotted on a graph.

b)

The smaller the error bars the more accurate the result

c)

Go the the table and plot the average result, then plat the SD next to it, half above the point and half below the point

d)

The larger the error bars the less valid the practical is.

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