SYDNEY PAGON STEM ACADEMY
Science Department
Biology
Grade 9H-9I
END OF YEAR EXAMINATION 2023
Duration: 2 Hours.
Teachers: Ms. C Bayliss and Ms. S Facey
Name: __________________________
Date: _________________________
Class: _________________________
READ ALL INSTRUCTIONS CAREFULLY
This paper consists of two (2) sections. Answer ALL questions in ALL sections to ensure
maximum marks.
SECTION A – MULTIPLE CHOICE (25 marks)
Instruction: Circle the letter (A, B, C or D) which corresponds with the correct answer.
1.
________ is a special type of
diffusion that involves the movement of
water across a semi-permeable membrane
from an area of high concentration to an area
of low concentration.
A.
Hypotonic
B.
Diffusion
C.
Hypertonic
D.
Osmosis
2.
The substance being dissolved in a
solution is the:
A.
Solvent
B.
Diffusion
C.
Solution
D.
Solute
3.
The substance that dissolves the
solid to form a solution is the:
A.
Solvent
B.
Diffusion
C.
Solute
D.
Solution
4.
A mixture in which one or more
substances are completely dissolved in
another substance is a:
A.
Solvent
B.
Solution
C.
Diffusion
D.
Solute
5.
The following is a term for equal
concentration inside and outside of a cell:
A.
B.
C.
D.
Hypertonic
Homeostasis
Hypotonic
Isotonic
6.
Which of the following describes
what will happen to animal cells placed in a
dry environment?
A.
They will shrink due to water loss.
B.
They will swell and possibly burst
due to water gain.
C.
The cell membrane will stretch.
D.
Nothing will happen.
7.
What is the name given to
membranes that only allow certain materials
to pass through them?
A.
Selectively permeable
B.
Diffusion
C.
Osmosis
D.
Impermeable
8.
In osmosis, molecules move from an
area of _____________ concentration to an
area of _______________ concentration.
A.
B.
C.
D.
low: high
low: lower
high: higher
high: low
9.
When a cell is put into pure water, it
will _____
A.
Shrink
B.
Lose moisture
C.
Swell and burst
D.
Stay the same
10.
The body of a ____________
organism is composed of a singular cell.
A.
Unicellular
B.
Multicellular
C.
Unicellular and Multicellular
D.
None of these
11.
This type of organism has different
cells that are specialized to perform different
functions.
A.
Unicellular
B.
Unicellular and Multicellular
C.
Multicellular
D.
None of these
12.
Which of the following organisms
has the largest surface area to volume ratio?
A.
B.
C.
D.
Polar Bear
Earthworm
Elephant
Cat
13.
What is the circulatory system?
A.
The system that helps your body
breathe.
B.
Your body's muscles.
C.
Your body's nerves.
D.
Your body's blood transporting
system.
14.
The circulatory system is
composed of:
A.
The heart, blood, and blood
vessels.
B.
The heart, the brain, and the lungs.
C.
The lungs, the blood, and the
blood vessels.
D.
The brain, the heart, and the blood
vessels
15.
The heart is about the size of your:
A.
B.
C.
D.
Leg.
Brain.
Arm.
Fist.
Atrium.
Ventricles.
Valves.
Septum.
The body
The lungs
The Brain
The Heart muscles
18.
In the lungs, __________ leaves
the blood.
A.
B.
C.
D.
Veinlets
Artery
Capillary
Veins
20.
What is the smallest type of blood
vessel?
A.
B.
C.
Arteries.
Capillaries.
Veins
Arterioles
21.
What is the name of the largest
artery in the body?
17.
The right side of the heart pumps the
blood to _____.
A.
B.
C.
D.
A.
B.
C.
D.
D.
16.
What divides the left side of the
heart from the right side?
A.
B.
C.
D.
19.
Which type of blood vessel has the
largest lumen?
Oxygen
Carbon Dioxide
Nitrogen.
Phosphorus
A.
B.
C.
D.
Vena Cava
Septum
Arteriole
Aorta
22.
What links the arteries to the veins?
A.
B.
C.
D.
Muscle
Capillaries
Aorta
Ventricles
23.
Where do the veins carry blood?
A.
B.
C.
D.
To the heart
Away from the heart
To the heart muscles
To the lungs only
24.
Circulation provides your body
with:
A.
B.
C.
D.
Oxygen
Nutrients
A way to get rid of waste
All of the above.
25.
The heart is primarily made up of:
A.
B.
C.
D.
Skin
Glands
Muscle
Blood vessels
SECTION B- SHORT ANSWERS
Instruction: Answer all questions in the spaces provided.
1. State one main difference between osmosis and diffusion? (2 marks)
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
2. Given a potato, beakers, knife and sodium chloride explain how you would carry out an
experiment to investigate the process of osmosis. Be as detailed as possible (5 marks)
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
_____________________________________________________________________________
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____________________________________________________________________________
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3. Use the words below to complete the sentences about the Circulatory system.(7 marks).
right
oxygen
Left
de-oxygenated
oxygenated
carbon dioxide
Red cells transport ___________________; ___________________ is dissolved in the plasma.
___________________blood returns from the body in veins to the___________________ atrium
to the heart. ___________________blood returns from the lungs to the __________________
atrium. Blood leaves from the ___________________ ventricle into the aorta.
4. Use the following words to label the diagram of the heart below: (10 marks)
Pulmonary artery
Bicuspid valve
Tricuspid valve
Left ventricle
Right atrium
Aorta
Left atrium
Septum
Vena cava
Right ventricle
5 a) What is the largest part of the blood? __________________________________ (1 mark)
b) Name THREE substance contained in the plasma
____________________________________________________________________ (3 marks)
c) Where are red blood cells made?
___________________________________________________________________ (1 mark)
d) Explain why are red blood cells red.
____________________________________________________________________ (1 mark)
e) i) What is the function of red blood cells?
______________________________________________________________________________
__________________________________________________________________ (2 marks)
6 a) List three (3) main functions of the blood.
______________________________________________________________________________
____________________________________________________________________ (3 marks)
b) What is the main function of white blood cells?
____________________________________________________________________ (1 mark)
7 a). What parts make up the central nervous system?
____________________________________________________________________ (2 marks)
b) What makes up the peripheral nervous system?
____________________________________________________________________ (1 mark)
c) Complete the table below with the parts of the brain and ONE function of each part
(6 marks).
Parts of the brain
Function
1.
2.
3.
END OF EXAMINATION
`TOTAL MARKS: 70 marks
Please recheck all answers before handing in this paper.