Kingsmead Technology College

Q1.The image below shows some muscle cells from the wall of the stomach, as seen through a light
microscope.

(a) Describe the function of muscle cells in the wall of the stomach.

........................................................................................................................

........................................................................................................................
(2)

(b) Figure above is highly magnified.

The scale bar in Figure above represents 0.1 mm.

Use a ruler to measure the length of the scale bar and then calculate the magnification of
Figure above.

Magnification = ............................. times

(2)

(c) The muscle cells in Figure above contain many mitochondria.

What is the function of mitochondria?

........................................................................................................................

........................................................................................................................
(2)

(d) The muscle cells also contain many ribosomes. The ribosomes cannot be seen in Figure
above.

(i) What is the function of a ribosome?

...............................................................................................................

...............................................................................................................
(1)

(ii) Suggest why the ribosomes cannot be seen through a light microscope.

...............................................................................................................

...............................................................................................................
(1)
(Total 8 marks)

Q2. The diagram shows two cells, a bacterial cell and a plant cell.

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(a) (i) Both the bacterial cell and the plant cell contain ribosomes.

What is the function of a ribosome?

...............................................................................................................

...............................................................................................................
(1)

(ii) The plant cell contains mitochondria but the bacterial cell does not contain
mitochondria.

Give one other way in which the plant cell is different from the bacterial cell.

...............................................................................................................

...............................................................................................................
(1)

(b) (i) Both cells are drawn the same length, but the magnification of each cell is different.

The real length of the bacterial cell is 2 micrometres.

Calculate the real length, X, of the plant cell. Give your answer in micrometres.

Show clearly how you work out your answer.

...............................................................................................................

...............................................................................................................

...............................................................................................................

X = Page 2........................................ micrometres

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(2)

(ii) Most mitochondria are about 3 micrometres in length.

The plant cell contains mitochondria but the bacterial cell does not contain
mitochondria.

Use your answer to part (b)(i) and the information in the diagram to suggest why.

...............................................................................................................

...............................................................................................................
(1)
(Total 5 marks)

Q3. The diagram shows a cell from a plant leaf.

(a) Name structures A and B.

(b) Structure C is a chloroplast. What is the function of

a chloroplast?
(1)

(c) The table gives one difference between a plant cell

and an animal cell.

Complete the table to give two more differences.

Plant cell Animal cell

1. Has chloroplasts 1. No chloroplasts

2. 2.

3. 3.

(2)

Q4. The diagram shows an animal cell.

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(a) Name each labelled part and give its function.

A Name ...............................................................................................................

Function ..........................................................................................................

.........................................................................................................................

B Name ..............................................................................................................

Function .........................................................................................................

........................................................................................................................

C Name ..............................................................................................................

Function .........................................................................................................

........................................................................................................................(6)

(b) (i) This plant cell also contains chloroplasts, a cell wall and a vacuole. Label each of

these parts on the diagram.

(3)

(ii) Give the function of these parts of a plant cell.

Chloroplast function .........................................................................................

...........................................................................................................................

Cell wall function .............................................................................................

...........................................................................................................................

Vacuole function ..............................................................................................

...........................................................................................................................
(3)
(Total 12 marks)

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M1.(a) contract / shorten

ignore relax
do not allow expand
1

to churn / move / mix food

accept peristalsis / mechanical digestion
ignore movement unqualified
1

(b) 400
acceptable range 390-410
allow 1 mark for answer in range of 39 to 41
allow 1 mark for answer in range of 3900 to 4100
2

(c) to transfer energy for use

allow to release / give / supply / provide energy
do not allow to ‘make’ / ߢproduce’ / ‘create’ energy
allow to make ATP
ignore to store energy
1

by (aerobic) respiration or from glucose

do not allow anaerobic
energy released for respiration = max 1 mark
1

(d) (i) to make protein / enzyme

ignore ‘antibody’ or other named protein
1

(ii) too small / very small

allow light microscope does not have sufficient magnification /
resolution
allow ribosomes are smaller than mitochondria
ignore not sensitive enough
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ignore ribosomes are transparent
1
[8]

M2. (a) (i) makes / produces / synthesises protein / enzyme

1

(ii) plant cell has nucleus / vacuole / chloroplasts / chlorophyll

or plant cell is much larger
‘It’ = plant cell
allow correct reference to DNA or chromosomes
allow plant cell has fewer ribosomes
allow cellulose (cell wall)
1

(b) (i) 200

correct answer with or without working gains 2 marks

if answer incorrect, allow 1 mark for or or

100
2

(ii) bacterial cell is too small / bacterial cell about same size as a mitochondrion / ‘no
room’
ignore references to respiration
1
[5]

M3. (a) A = nucleus

accept phonetic spelling only
1

B = (cell) membrane
accept plasma membrane
1

(b) any one from: Page 7

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photosynthesis

makes sugar / starch / carbohydrate / organic material

accept ‘makes food’
do not accept makes chlorophyll
ignore stores starch / food / light / chlorophyll

traps or absorbs light

1

(c) any two from:

Plant cell Animal cell
no vacuole or small/temporary
• (has) vacuole or has cell sap
vacuole or no cell sap
no wall/cellulose or only
• (has) wall/cellulose
membrane
doesn't store/have starch or
• (stores) starch or doesn't store glycogen
stores glycogen

ignore reference to shape

must be clear indication in all four boxes
ignore reference to chlorophyll
2
[5]

M4. (a) A cytoplasm

1

where (chemical) reactions take place

do not accept where cell functions take place
1

or

carries/holds the organelles/named organelles / named chemicals (including nutrients)

do not accept keeps the shape of the cell

or
contains water

or
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allow: keeps cell turgid
allows transport through the cell

B membrane
do not accept by themselves:
protects cell
gives shape
1

controls what enters/leaves the cell

1

or
contains the cell/holds the cell together
do not accept keeps harmful substances out

or
allows movement into and out of the cell C nucleus
1

contains the genetic

material/DNA/genes/chromosomes
do not accept:
brain of the cell
stores information/instructions
tells cell what to do

or
controls (the activity) of the cell
1

(b) (i) one mark for each correctly labelled part

cell wall
do not accept anything inboard of the inner edge vacuole
accept anything inboard of transplant

chloroplast: site of photosynthesis/ for photosynthesis

accept word equation or balanced equation
1

cell wall: supports the cell/keeps the shape/keeps it rigid

do not accept protects the cells
2

(ii) vacuole: acts as reservoir for water / chemicals/(cell)/sap

3
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or
keeps cell turgid/pushes content to
edge
or
maintains concentration gradient
or
allows cell elongation (not growth)
1
[12]

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