Crossroad International Learning Centre
First-Semester Assessment
Name
Year Level
Subject
Marks
Date
/ 100
( Answer all the questions and make your papers tidy )
I. Write True or False to the following statements. ( 10 marks )
1.
Plant cells have a rigid cell wall made of cellulose.
2.
Animal cells typically have a central vacuole for storage of
nutrients and waste.
Both plant and animal cells have mitochondria for energy
production.
Chloroplasts, responsible for photosynthesis, are found in
animal cells.
Bacterial cells are usually larger and more complex than plant
and animal cells.
As the side length of a cube increases, the volume decreases.
3.
4.
5.
6.
7.
8.
9.
10.
Diffusion is the movement of particles from higher
concentration to lower concentration.
Diffusion is faster in cells with a greater surface area to
volume ratio.
Stomata which are pores or tiny openings can find in plant
roots.
Surface area to volume ratio of 0.5 cm2 and 25 cm3 is 50 : 1 .
II. Select the best answer for each of the statements from the following. ( 10 marks )
1.
2.
3.
What is a characteristic feature of plant cells that
distinguishes them from animal cells?
A) Nucleus B) Cell Wall C) Ribosome D) Mitochondria
What is common feature of both plant and animal cells?
A) Cell Wall B) Vacuole
C) Nucleus D) Chloroplast
Which cell type typically lacks membrane- bound
organelles?
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4.
5.
6.
7.
8.
9.
10.
A) Plant Cell
B) Animal Cell
C) Bacterial Cell
D) Both Plant and Animal Cells
Gives the cell structure.
A) Cell Wall
B) Cell membrane C) Vacuole D) Flagellum
How many organelles do the bacterial cells have?
A) 5
B) 6
C) 7
D) 8
Increasing the temperature ………… the rate of diffusion.
A) increases
B) decreases
C) can’t affect
D) can make stable
Scientifically, we can call the interior surface of the small
intestine as …………..
A) villi
B) lumen
C) lamellae D) stomata
At the temperature 15֯ C, the concentration of water is
approximately ………….., compared to 21% in air.
A) 1%
B) 2%
C) 3%
D) 4%
The scientific name of outer layer of root is …………..
A) lumen
B) stomata
C) epidermis D) lamellae
Carbon dioxide is obtained by diffusion into the leaves
though the …………
A) villi
B) epidermis C) stomata
D) lamellae
III. Bones can store different minerals, state the two main minerals. ( 2 marks )
IV. What is joint? Describe the name of three types of joint according to the following
diagrams. ( 4 marks )
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V. Bone marrow is spongy or cancellous bones that made up of porous tissue. This bone
tissue is filled with blood vessels and red and yellow bone marrow. The red bone
marrow is responsible for producing red, white blood cells and platelets. Give the
functions of red blood cells, white blood cells and platelets. ( 3 marks )
VI. Nitrogen is used to make fertilizers, nitric acid, nylon, dyes and explosives, and sodium
is found in washing soda. Give the chemical symbols of nitrogen and sodium. (2 marks)
Chemical symbols of nitrogen =
sodium =
VII.
VIII. Answer the following questions. ( 12 marks )
(a) Find the number of protons, electrons and neutrons.
(b) Draw the electronic configurations.
(c) Give the electronic structures and period numbers of oxygen atom and
calcium atom. (You are allowed to use the periodic table)
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Oxygen atom
Calcium atom
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IX.
X.
XI. Write chemical formula for each compound. ( 6 marks )
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XII. Give the two properties of metals and non-metals. ( 4 marks )
Metals
Non-metals
XIII. Answer the following questions. ( 6 marks )
(a) Give the numbers of atoms of reactants ( left-hand side ) and the number of
elements. 2Na + H2SO4 → Na2SO4 + H2
(b) Give the numbers of atoms of products ( right-hand side ) and the number of
elements. CaO + 2HCl → CaCl2 + H2O
XIV. Complete the table to show which of the properties describes compounds and which
describe mixtures. ( 8 marks )
Property
The substance has different properties to the elements it
is made from.
The elements can be separated only using chemical
reactions.
Each substance can be separated easily.
Compound or mixture
The different elements are chemically joined together.
You cannot vary the amount of each element.
The different substances are not chemically joined
together.
Each substance keeps its own properties.
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You can vary the amount of each substance.
XV. Label each box with the correct key word: element, compound or mixture. ( 10 marks )
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XVI. Define the bones. How many types of bones are there? State them. ( 8 marks )
XVII. Describe the functions of long bones and flat bones by giving two examples for each.
( 6 marks )
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