Brookside International College
Form 3 Science Mid Term Assessment February
2025
CANDIDATE
NAME
DATE
T
1 HOUR
Instructions:
- Use black pen. Pencil should only be used for drawing.
- Fill in the sections at the top of this page.
- Answer all questions.
- You must answer the questions in the spaces provided.
Do not write outside the box around each page or on
blank pages.
- Do all rough work in this book. Cross through any work
you do not want to be marked.
For Teacher’s Use
Amend as required
Question 1
Question 2
Question 3
Question 4
Question 5
For this paper you must have:
- A ruler
Information:
- The marks for questions are show in brackets
- The maximum mark for this assessment is 50.
Total Marks
1a) Fig. 1.1 shows the alimentary canal and associated organs in humans.
Table 1.1 shows the name and function of some of the parts labelled in Fig. 1.1. Complete Table
1.1.
Label
Name of part
function
Stomach
Digestion of protein
E
Digestion of insoluble molecules
and
…………………………………………
Of soluble molecules
Secretion of lipase
C
[4]
(b) State the part of the alimentary canal where food is ingested.
..................................................................................................................................... [1]
(ci) What is the difference between mechanical and chemical digestion?
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(ii) How does the large intestine contribute to digestion?
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2
(a) Fig. 1.1 is a diagram of a fetus inside the uterus.
On Fig. 1.1, draw a label line and the letter C to identify the cervix.
[1]
(b) The fetus requires energy and amino acids for growth.
(i) State the name of the process in cells that releases energy.
.............................................................................................................................[1]
(ii) Describe how the fetus obtains amino acids.
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3. Different types of mixtures need different separation processes to isolate the pure substances
from the mixture.
(a) For each separation process, draw one straight line to the correct description.
Separation
Crystallization
Filtration
Chromatography
description
Separating an insoluble solid from a
mixture of a solid in water
separating dyes from a mixture of
dyes in a coloured ink
separating a salt from an aqueous
solution
[3]
(b) Fig. 2.2 shows the arrangement of particles in water at +10°C
Complete the diagrams in Fig. 2.3 to show the arrangement of particles in water at –10°C and at
+110°C.
[3]
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c) A student labels a diagram of a plant cell.
(i)
(ii)
The student has not labelled the diagram correctly. Circle all the labels on Fig. 4.1 that
are not correct.
[3]
Explain how the cell in Fig. 4.1 is adapted to its function.
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4a). The grass and flowering plants make their own organic nutrients during
photosynthesis.
i)
Complete the word equation for photosynthesis.
………….. + Carbon Dioxide
glucose + ……………………………[3]
(ii) Describe the role of chlorophyll in the production of glucose during photosynthesis.
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(iii)
Glucose molecules may be joined together to form starch. State the function of starch in
plants.
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(iv)
.………………………………………………………………………………..………..[1]
Name one other large molecule made from many glucose molecules joined together.
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……………………………………………………………………………………….….[1]
(b) Fig. 4.1 shows a student’s diagram of a cross-section through a leaf
The student uses Table 4.1 to show the functions of some of the leaf parts labelled in Fig. 4.1.
Complete Table 4.1
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Letter
A
Name of part
Function
Photosynthesis
D
phloem
[5]
(c) Fig. 4.2 shows cells that line the airways of a non-smoker and a smoker
Explain how smoking tobacco affects the function of the cells shown in Fig. 4.2. Use
the information in Fig. 4.2 in your
answer...........................................................................................................
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5a) As the gas is pumped in, the pump emits a sound wave. Fig. 6.2 shows a diagram of the
sound wave
i)
Show clearly on Fig. 6.2 the amplitude of the sound wave, trough and wavelength
[3]
ii)
Write down the names of these electrical symbols.
…………………………………………….
b)
[2]
Ahmed describes an electrical circuit.
My circuit is a complete series circuit with:
▪
one battery of cells
▪
two lamps
▪
one open switch
▪
one variable resistor
▪
one meter to measure the current in the whole circuit
▪
one meter to measure the voltage across the variable resistor.
Draw his circuit using conventional symbols.
The battery of cells has been drawn for you.
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[6]
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