THE CELL FORM 1 QUESTIONS AND ANSWERS
1. 1995 Q2 P1
Name the organelle
that performs each of the following functions in a cell (2 marks)
Proteins synthesis…………………………………
Transport of cell secretions………………………
2. 1996 Q8 P1
3. 1997 Q1 P1
State the
functions of the following cell organelles (2 marks)
a)
Golgi apparatus
b)
Ribosomes
4. 1998 Q3 P1
Which
organelle would be abundant in: (2 marks)
Skeletal muscle cell
Palisade cell
5. 2001 Q7 P1
Name the organelle in which protein synthesis takes place (1 mark)
6. 2004 Q7
P1
7. 2007 Q2 P1
(a) What is the formula for calculating linear magnification of a
specimen when
using a hand lens? (1
mark)
(b) Give a reason why staining is necessary when preparing specimens for
observation under the
microscope (1
mark)
8. 2007 Q3
P1
Plant cells do not burst when immersed in distilled water. Explain (2 marks)
9. 2007 Q4 P1
State three functions of Golgi
apparatus (3 marks)
10. 2008 Q12 P1
State two
functions of the endoplasmic reticulum (2 marks)
11. 2009 Q3
P1
12. 2009 Q7 P1
13. 2009 Q15 P1
14. 2009 Q26 P1
15. 2010 Q3 P1
State the function
of:
a)
Ribosomes (1
mark)
b)
Lysosomes (1
mark)
16. 2010 Q4 P1
The diagram below shows a specialized plant cell.
a)
i)
Name the cell (1
mark)
ii) Name the parts labeled D and E. (2
marks)
b) state the function of the part labeled C. (1
mark)
17.
2010 Q9 P1
State
two ways in which chloroplasts are
adapted to their functions. (2
marks)
18. 2011 Q11 P1
19. 2011 Q15 P1
Give reasons for carrying out the following procedures when
preparing temporary wet
mounts of plant tissues.
a) Making thin plant
sections (1 mark)
b) Adding water on the plant section. (1 mark)
c) Placing a cover slip over the
plant section. (1 mark)
20. 2012 Q3 P1
The figure below is a fine structure of a generalised
animal cell as seen under an electron microscope.
(a) Name
the parts labelled A and B (2 marks)
(b) How
is the structure labelled B adapted to its functions (2 marks)
21. 2012 Q12 P1
(a)
Name the part of a light microscope used to bring an image of a specimen into
sharp
focus. (1 mark)
(b) Why is it recommended to keep the
stage of the microscope dry? (1mark)
22.
2012 Q27, 30 P1
What
is the function of contractile vacuoles in amoeba? (1 mark)
23.
2012 Q30 P1
Name the organelle that is involved
in each of the following: (2 marks)
(a)
Manufacture
of lipids
(b)
Formation
of Lysosomes
24.
2013 Q6 P1
Using
a microscope, a student counted 55 cells across a field of view whose diameter
was 6000µm. Calculate the
average length of the cells. Show your working. (2 marks)
25.
2013 Q6 P1
26.
2014 Q7 P1
A student drew a
6mm long diagram of a plant flower. If the actual length of the flower was
12cm, calculate the magnification of the drawing made by the student. Show your
working. (2
marks)
27.
2014 Q20 P1
State one function of each of the following
cell organelles:
a) Golgi bodies (1 mark)
b) Lysosomes. (1 mark)
THE CELL
MARKING SCHEME
1. 1995 Q2 P1
Protein synthesis – Ribosomes
Transport of cell
secretions – Endoplasmic reticulum
2. 1996
Q8 P1
Store chemical
salts/sugar/blood/; maintain shape of
cell. Osmotic gradient bring
about movement of water.
3. 1997
Q1 P1
(a) Golgi apparatus
Packaging of synthesized materials; Accept correctly named materials
e.g glycoproteins
(b)
Ribosomes
Transport of
the packed materials, secretion of packed materials;
Manufacture /
synthesis of proteins.
4. 1998 Q3
P1
Skeletal muscle
cell- Mitochondria
Palisade cell - Chloroplasts
5. 2001
Q7 P1
– Ribosomes
6. 2004
Q7 P1
a) Stores hydrolytic enzymes for
destruction of worn out organelles / cells / tissues /
digestion of bacteria. /
pathogens;
Acc. Digestion of food / accept autolysis.
b) Processing / packaging synthesized cell materials and transporting
of packaged cell
materials;.
Production of lysosomes/ secretions of
packaged material;
7. 2007 Q2
P1
(a) Drawing Linear =
length of the drawing
magnification Length of the object
(b) It is adding a dye to
the specimen to make the feature clearer and distinguishable.
8.
2007 Q3 P1
Plant cells have
membrane and cell wall. When the cell is placed or immersed in distilled water,
the water is absorbed by osmosis. As cell becomes turgid, the cell creates an
inward force, wall pressure that prevents the cell from bursting.
9. 2007 Q4 P1
From vesicles that transport materials
to other parts of the cell e.g proteins.
- Transportation
of secretions to the cell surface for secretion e.g. enzymes and mucus
- They form Lysosomes
10. 2008 Q12 P1
- Transport of protein
- Synthesis/ transport of lipids/
steroids
- Site for attachment for ribosome.
11. 2009 Q3
P1
(a) Magnification of the
object/ image
Acc: Magnification alone
(b) Regulates amount of
light (falling on the object on microscope);
Acc: adjust/control amount of light
12. 2009 Q7 P1
(a) Site for protein synthesis Ref:
Aurolysis
NB: Must mention effects of lytic enzymes
(b)
Break down worn out cells / organelles / food materials
13. 2009
Q15 P1
Cytoplasmic streaming ; /Acc: Cyclosis for cytoplasmic streaming
14. 2009
Q26 P1
Inner membrane is highly folded / have cristae to
provide a large surface area; / for attachment of respiratory enzyme.
15. 2010 Q3 P1
(a) Protein synthesis (Accept: site
for protein symbiosis)
(b) Destroys worn out
organelles/cells/tissues
Destroys micro-organisms.
16. 2010 Q4 P1
(a) i)
Root hair(cell)
ii) D – cell wall
E – cell sap (vacuole)
(b) Controls the functioning of the cell/
controls cell activities
17. 2010 Q9 P1
-
They
contain chlorophyll which traps/absorb light (energy)
-
They
have grana which increase surface area for accommodation of a large number of
chlorophyll molecules for photosynthesis
-
The
stoma has enzymes for photosynthesis
18. 2011
Q11 P1
-
Moves
the body tube through smaller distances to bring the image specimen/object into
sharper focus;
-
Platform
where specimen (on slide) is placed.
19. 2011
Q15 P1
-
To
reduce layers of cells to allow light to pass though;
-
To
make the cells turgid / prevent drying up;
-
To
protect the lens on the objective
20. 2012 Q3 P1
(a) A Nucleopore/ Nuclear pore;
B Rough endoplasmic reticulum
(b) Surface area covered with ribosomes;for
protein synthesis/channels for
transport of proteins. NB: Tied to (a) structure to function
21. 2012 Q12 P1
(a) Fine adjustment knob
(b) Avoid refraction of
light; prevent wetting of the stage
22. 2012 Q27 P1
Removes excess water/waste
products/homeostasis/osmoregulation/excretion
23. 2012 Q30 P1
(a) manufacture of
lipids- smooth endoplasmic reticulum
(b) formation of
lysosomes – golgi bodies/golgi apparatus
24. 2013 Q6 P1
Length of cell = diameter
of the field of view(um)
number of
cells
25. 2013 Q9 P1
(a)
·
Has many extensions i.e. dendrites, axons and dendron,
that receive and send impulses from one part of the body to another.
·
has myelin sheath or medullated sheath which a fatty
sheath that encloses the axon hence insulate the axon and impulses.
·
has Schwann cell that are in close contact with axon
and they secrete the myelin sheath.
·
myelin sheath has constrictions at intervals - called
nodes of Ranvier to propagate the nerve impulse and speed up the transmissions
of an impulse.
(b) i • inner membrane is
greatly folded to form cristae which increase surface area for
respiratory
activity
•
matrix contains enzymes that catalyzes rate of reaction.
26.
2014 Q7 P1
Drawing length in cm
Object length in cm
6cm /12 cm = x0.5
27. 2014 Q20 P1
a) Golgi bodies
- Formation of lysosomes
- Transport of lipids around the cell
- Packing of substances proteins for secretion.
b) Lysosomes.
-Breakdown large molecules / digestions of foods
-Destroy worn out organelles or cells
Acc. Tissues or organelles
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