ACE YR IGCSE A TOP APPROACH TO BIO

Format 210mm X 297mm Extent= 248 pgs (12.66 mm) (70gsm paper) Status: CRC Date: 30/3


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ACE YOUR

BIOLOGY





Workbook




Cambridge IGCSE Ace Your Biology is designed to aid students build
TM
the skills required to succeed in the IGCSE Biology Examination. By working
through the questions in the book, students are well equipped with valuable
techniques in answering the examination questions. Cambridge IGCSE TM ACE YOUR BIOLOGY

This workbook is written distinctively based on the Cambridge IGCSE Biology
2020−2022 and 2023−2025 syllabuses for (0610) and (0970) courses. The
scope, sequence and level of the workbook has been constructed to match the
Cambridge IGCSE Year 10 and Year 11 syllabuses.

A wealth of questions in the book sets a benchmark to prepare students for
the examination-based questions at Extended Level, which include both
multiple-choice and structured questions. In addition, this workbook provides
detailed explanation to all the questions in its answer key. Upon completing
the ample questions in this book, students are on their path in developing the
fundamental scientific skills for progression to Cambridge International AS Penerbitan Pelangi Sdn Bhd. All Rights Reserved.
and A Level, further education, or science-related professions.

About the Author

Daniel Danny Kiiung Jia Hou from Sarawak in Malaysia, graduated from SMK Sacred Heart,
Sibu. He received his Bachelor of Science (Honors) in Wildlife Biology Degree from Institute
of Technology Tralee, Ireland. His greatest achievement was the rehabilitation of a rescued Cambridge IGCSE TM
loggerhead sea turtle (Caretta caretta), Sally which was returned to the Mediterranean Sea after
six months.

Nevertheless, Daniel initiated a wildlife research project in 2018 on the investigation of ‘The Distribution
of New Zealand Land Hooper, Arcitalitrus dorrieni in Ireland’. He cooperated with the National ACE YOUR
Biodiversity Data Centre of Ireland (NBDC) to study the alien species, the only shrimp species that
walks on land, which made its presence on the land of Ireland since 1903. On top of that, Daniel had
the privilege to attend an interview on Radio Kerry Ireland to broadcast his project nationwide.

He is currently a Biology tutor in Teras Murni Education Group, under Homeschool and Broadway BIOLOGY
Academy. Daniel’s education and his experiences in wildlife biology field has provided numerous
opportunities for him to educate students, conducting educational and conservation trips, and raising
awareness on wildlife protection among our next generations. He always keeps this phrase in his mind
“I believe that education is all about being excited about something. Seeing passion and enthusiasm
Workbook
helps push an educational message.”, quoted by his childhood hero, the late Steve Irwin.





www.dickenspublishing.co.uk
DA1305
ISBN: 978-1-78187-263-5

Suite G7-G8, Davina House, 137-149 Goswell Road,
London, EC1V 7ET, United Kingdom.
E-mail: [email protected] Daniel Danny Kiiung Jia Hou

Contents










Preface iii
Chapter 11 Gas Exchange in Humans 93

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Assessment Overview iv
Chapter 12 Respiration 99

Glossary of Terms Used in Science Exam Papers v
Chapter 13 Excretion in Humans 106

Chapter 1 Characteristics and Classification of
Living Organisms 1
Chapter 14 Coordination and Response 112



Chapter 2 Organisation of the Organism 12
Chapter 15 Drugs 124



Chapter 3 Movement Into and Out of Cells 21
Chapter 16 Reproduction 130



Chapter 4 Biological Molecules 33
Chapter 17 Inheritance 144



Chapter 5 Enzymes 41
Chapter 18 Variation and Selection 153



Chapter 6 Plant Nutrition 49
Chapter 19 Organisms and Their Environment
161

Chapter 7 Human Nutrition 60

Chapter 20 Human Influences on Ecosystems
171
Chapter 8 Transport in Plants 70


Chapter 21 Biotechnology and Genetic
Chapter 9 Transport in Animals 77 Modification 181


Answers 189
Chapter 10 Diseases and Immunity 87


Note: Chapter 20 and Chapter 21 are interchanged in the syllabus of 2020 – 2022.



vi Contents Contents 1







Contents.indd 1 30/03/2022 3:17 PM

1 Characteristics and Classification


of Living Organisms






Part 1: Multiple-choice Questions
Answer all questions. For each question, there are four possible answers. Choose the best and correct answer.

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1 The diagram illustrates some of the 3 Which of the following characteristics of
processes carried out by living organisms. living things involves ingestion, absorption,
and assimilation?
Carbon
Oxygen A growth C excretion
dioxide B nutrition D respiration

y 4 The diagram shows a species of lion.
Light Green x
energy plants Animals
z


Waste
Waste product products


Which of the following processes of living
organisms are represented by arrows x, y
and z?
x y z According to the binomial naming system,

A nutrition respiration excretion how is this lion named?
A panthera Leo
B respiration excretion nutrition B Panthera leo
C nutrition excretion respiration C PantheraLeo
D respiration excretion reproduction D panthera leo

2 The diagram shows the stage of growth of
a plant. Clone May / June 2018
5 The diagram shows an animal whose name
is Falco berigora according to the binomial
naming system.








Based on the diagram, which characteristics
of living things are shown by this sequence?
A sensitivity and growth
B nutrition and reproduction
C sensitivity and reproduction Which species does this animal belong to?
D excretion and growth A falcon C Falco
B bird D F.berigora




Chapter 1 Characteristics and Classification of Living Organisms 1







Chapter 1.indd 1 30/03/2022 3:07 PM

6 The chart shows a dichotomous key for an animal.

Animal





Have legs No legs
T


Have feathers No feathers
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U

Has scales No scales
V W

Which class of vertebrates do organisms U, V, T and W belong to?
U V T W

A fish birds amphibians reptiles

B birds amphibians fish reptiles
C birds reptiles fish amphibians

D amphibians birds reptiles fish

7 The table shows the differences between four groups of kingdoms which are the plant kingdom,
fungi kingdom, prokaryotes (bacteria) kingdom and protoctists (single-cell organisms)
kingdom. Which of the following correctly describes the feature of each kingdom?

plant fungi prokaryotes protoctists

A have large vacuole no vacuole no cell wall have cell wall
B cell wall with cell wall with chitin no nucleus have nucleus
cellulose

C cell wall with cell wall with have nucleus no nucleus
chitin cellulose
D no vacuole have large vacuole have cell wall no cell wall


8 The diagram shows some leaves and flowers Which of the following correctly describes
of different plants. monocotyledon plants?


number description
A 1 and 4 parallel veins and flowers
with 4 petals
B 3 and 5 network veins and flowers
with 6 petals
C 1 and 5 parallel veins and flowers
with 6 petals

1 2 3 4 5 D 2 and 4 network veins and flowers
with 4 petals



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Chapter 1.indd 2 30/03/2022 3:07 PM

Clone May / June 2010 10 The diagram shows the leaf of a plant
species.
9 The diagram shows a plant species. Use the
dichotomous key to identify the plant
species and choose the correct answer.








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Use the dichotomous key to identify the
plant species and choose the correct
answer.
1. leaf with large leaf blade ............. go to 2
1. flowers with four petals .......... go to 2 leaf with several small leaflets .... go to 3
flowers with five petals .............. go to 3 2. leaves with smooth edge ..................... A
2. leaves with smooth edge .................... A leaves with jagged edge ....................... B
leaves with jagged edge ...................... B 3. broad and flat leaves ............................ C
3. leaves with smooth edge .................... C narrow and long leaves ....................... D
leaves with jagged edge ...................... D






Part 2: Structured Questions
Answer all questions.

1 Fig. 1.1 shows a species of chordate, platypus, Ornithorhynchus anatinus.














Fig. 1.1

(a) (i) Which genus does Ornithorhynchus anatinus belong to?



[1]

(ii) Define the term vertebrates.


[1]










Chapter 1 Characteristics and Classification of Living Organisms 3







Chapter 1.indd 3 30/03/2022 3:07 PM

(b) State one physical feature that shows that Ornithorhynchus anatinus is grouped into the
class of mammals.



[1]

(c) Ornithorhynchus anatinus is an unusual mammal because it lays eggs, instead of giving
birth to the young. Laying eggs for reproduction normally belongs to which group of
vertebrates? Give two examples.


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[2]
[Total: 5]


Clone May / June 2011
2 Fig. 2.1 shows two species of spiders, Latrodectus hesperus and Steatoda nobilis.














Latrodectus hesperus Steatoda nobilis
Fig. 2.1

Latrodectus hesperus is commonly known as the Black Widow Spider, which is a deadly
venomous spider species. Steatoda nobilis has physical features similar to Latrodectus hesperus
but is non-venomous.

(a) Steatoda nobilis are very similar in appearance to Latrodectus hesperus. Explain how this
is an advantage to Steatoda nobilis. Give two details.






[2]
(b) Explain how the binomial names of these two spiders indicate that they are not closely
related.






[2]

(c) State the class of invertebrates that Latrodectus hesperus and Steatoda nobilis are classified
in.



[1]


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Chapter 1.indd 4 30/03/2022 3:07 PM

(d) State two other examples of this group.



[2]

(e) Complete Table 2.1 to describe the differences between two groups of invertebrates.
Table 2.1

features arachnids insects

number of legs
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name of each body segment

presence of wings (present / absent)

[3]
[Total: 10]
3 The following questions are based on the characteristics of living organisms.

(a) Define the term nutrition.









[3]

(b) Define the term respiration.








[3]

(c) Define the term excretion.








[3]

(d) James places an Amoeba sp. sample and observes it under a microscope. After several
hours, James returns to observe it again to find out that the bacterial cell has duplicated to
about 20 cells. State the characteristic of living organism shown in the Amoeba sp. sample.


[1]

[Total: 10]






Chapter 1 Characteristics and Classification of Living Organisms 5







Chapter 1.indd 5 30/03/2022 3:07 PM

Clone Feb / Mar 2018
4 Fig. 4.1 shows six different species of bacteria.

(a) Use the following key to identify the six species of bacteria and name each species in the
blank spaces provided.
Is flagellum present?


Yes No

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More than one flagellum Spiral shape

Yes No Yes No


Flagellum Organism C Organism D Bacteria
attach to one from a
end only Yes chain

Yes No Organism E No


Organism A Organism B Organism F




























Fig. 4.1
[6]
(b) State the name of the kingdom that the bacteria in (a) belong to.



[1]

(c) State one similarity and one difference in the structural features to distinguish the cells
of protoctists and bacteria.

Similarity: [1]

Difference: [1]
[Total: 9]


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Chapter 1.indd 6 30/03/2022 3:07 PM

Clone Feb / Mar 2019
5 Fig. 5.1 shows a virus cell.



X
Y

Cell membrane of host cell


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Fig. 5.1

(a) Name the parts of the virus labelled X and Y.

X: Y:
[1] [1]

(b) Complete Table 5.1 to state four ways in which the structure of the bacterial cell differs
from the structure of the virus.
Table 5.1
features virus bacteria
type of outer layer
presence of cytoplasm

type of genetic material
living or non-living
[4]
[Total: 6]

6 Fig. 6.1 shows the diagram of Organism G, Organism H and Organism I.










Organism G Organism H Organism I

Fig. 6.1

(a) Based on Fig. 6.1, group the three organisms into ferns, flowering plants and fungi.

ferns flowering plants fungi




[3]

(b) State the name of the branching structures of fungi that help to absorb nutrients from the
environment.


[1]


Chapter 1 Characteristics and Classification of Living Organisms 7







Chapter 1.indd 7 30/03/2022 3:07 PM

(c) State one similarity between ferns and fungi.



[1]

(d) Complete Table 6.1 to determine two differences between ferns and fungi.

Table 6.1
features ferns fungi
cell wall
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nutrition
[2]
[Total: 7]

7 Plant Kingdom can be divided into ferns and flowering plants.

(a) State the name for the leaves of ferns.



[1]
(b) State one difference in terms of the reproduction method for ferns and flowering plants.






[2]

(c) Flowering plants are classified into monocots and dicots. Complete Table 7.1 for description
of each component.

Table 7.1
characteristics monocotyledons dicotyledons
type of leaf vein
type of root
number of petals on the flower
[6]
[Total: 9]

8 Birds and reptiles belong to the vertebrate group.

(a) Both birds and reptiles have dry scales on their body. State the body part of the birds that
have dry scales.



[1]

(b) Both reptiles and birds lay eggs. State the difference in the structure of the eggs between
reptiles and birds.





[2]



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Chapter 1.indd 8 30/03/2022 3:07 PM

(c) State one similarity between birds and reptiles.



[1]
[Total: 4]



9 Fig. 9.1 shows several species of plants present in the deciduous woodland.



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A B C D E F










G H I J
Fig. 9.1

Use the dichotomous key provided to identify the species of each plant. Write the letter of
each species (A to J) in the correct box beside the key. Plant species [A] has been done as an
example.

1 (a) Trees with modified leaves as needles Go to 2

(b) Trees with flat and broad-bladed leaves Go to 3
2 (a) Leaves have two needles in bundle Pinus banksiana A
(b) Leaves have more than two needles in bundle Pinus strobus
3 (a) Compound leaves Go to 4

(b) Simple leaves Go to 5
4 (a) Leaf composed of five leaflets Aesculus assamica
(b) Leaf composed of more than five leaflets Aesculus hippocastanum
5 (a) Leaves opposite from each other Acer pseudoplantanus
(b) Leaves alternate with each other Go to 6

6 (a) Tree with thorns Crataegus rhipidophylla
(b) Tree without thorns Go to 7
7 (a) Leaf blade shaped like a fan Ginkgo biloba
(b) Leaf blade not shaped like a fan Go to 8

8 (a) Leaf blade is oval and toothed but not lobed Ulmus minor
(b) Leaf blade is lobed Go to 9
9 (a) Leaf blade with round lobes Quercus alba
(b) Leaf blade with pointed lobes Quercus palustris




Chapter 1 Characteristics and Classification of Living Organisms 9







Chapter 1.indd 9 30/03/2022 3:07 PM

Refer to the guide provided for aid of using the dichotomous key.


Smooth edge Leaflet









Leaves alternate
to each other Simple leaf Compound leaf
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Toothed edge
Lobed
leaves







Needle Leaves opposite
leaves to each other

[Total: 9]

10 Fig. 10.1 shows several species of sharks.
Write the letter of each species (A to H) in the correct box beside the dichotomous key.












A B







C D








E F










G H

Fig. 10.1
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Chapter 1.indd 10 30/03/2022 3:07 PM

Use the guide provided to aid in using the dichotomous key to identify each species.

First
Fin spine dorsal fin

Second
dorsal fin


Caudal fin
Snout


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Mouth Anal fin
Gill slits Pelvic fin
Pectoral fin



1 (a) Anal fin present Go to 2

(b) Anal fin absent Go to 3

2 (a) Has two dorsal fins Go to 4

(b) Has only one dorsal fin Hexanchus griseus

3 (a) Long and narrow body Go to 5


(b) Body is flattened, ray-like body Squatina dumeril

4 (a) Has a dorsal fin spine Heterodontus galeatus

(b) Does not have a dorsal fin spine Go to 6

5 (a) Snout is elongated, saw-like Pristiophorus nudipinnis

(b) Snout is short and not saw-like Squalus acanthias


6 (a) Mouth is behind the eyes Go to 7

(b) Mouth is in front of the eyes Rhincodon typus

7 (a) Head is flattened Sphyrna mokarran

(b) Head is pointed and not flattened Isurus oxyrinchus


[Total: 8]



















Chapter 1 Characteristics and Classification of Living Organisms 11







Chapter 1.indd 11 30/03/2022 3:07 PM

2 Organisation of the Organism










Part 1: Multiple-choice Questions
Answer all questions. For each question, there are four possible answers. Choose the best and correct answer.

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1 What is the best term to describe a group B a cell
of xylem vessels in plants? C a tissue
A an organ D an organ system

2 Which of the following best describes the functions of xylem vessels?

conduction photosynthesis support absorption
A ✓ ✗ ✗ ✓
B ✗ ✓ ✓ ✗
C ✓ ✗ ✓ ✗

D ✗ ✓ ✗ ✓
3 The following is a description of cell What is the name of the cell component
component X. labelled Y and its function?

• controls cell’s activity cell component function
• contains the codes for the formation of Y Y
protein A cell membrane controls the
• contains the genetic materials of the substances
cell moving in and

Based on the description given, what is cell out of the cell
component X? B nucleus controls all cell
A cell membrane activities
B nucleus C ribosomes site for protein
C cytoplasm synthesis
D cell wall D mitochondrion site for cell
respiration to
Clone May / June 2019 release energy
4 The diagram shows a cell component found
in an animal cell. 5 Which of the following statements is not
correct?
A All plant cells have both chloroplasts
and cell walls.
B All animal and plant cells have nucleus.
Y C The jelly-like substance that fills up the
cell is known as cytoplasm.
D Photosynthesis of plants takes place in
the chloroplast.






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Chapter 2.indd 12 30/03/2022 3:08 PM

6 Which of the following shows the correct A The bacteria and dust cannot be filtered
order for the increasing level of by cilia.
organisation? B The bacteria and dust cannot be
A tissue → cell → system → organ → trapped by cilia.
organism C Mucus cannot be produced by cilia.
B cell → organ → tissue → organism → D Mucus cannot be carried towards the
system throat.
C cell → tissue → organ → system →
organism 9 Which of the following best describes the
D organism → tissue → cell → system main tissue and organ in the system
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→ organ process?
process tissue organ
Clone May / June 2019 A digestion in cardiac small
7 The diagram shows a xylem vessel in a humans muscles intestine
plant stem. Given that the magnification B photosynthesis epidermis leaves
is ×500 and the length of line XY is in plants
3.5 cm. What is the actual width of the C translocation phloem stem
xylem vessels along the line XY? in plants
D circulation platelets blood
of blood in
humans

X Y
10 Which of the following best describes the
difference between red blood cells and liver
cells?
A Red blood cells have cell membrane
while liver cells do not.
A 7.0 μm C 70.0 μm B Red blood cells have nucleus while
B 14 μm D 140 μm liver cells do not.
C Red blood cells do not have nucleus
8 Which of the following best describes the while liver cells do.
result of the destruction of cilia in the D Red blood cells do not have chloroplasts
respiratory tract caused by smoking? while liver cells do.

Part 2: Structured Questions
Answer all questions.
1 Fig. 1.1 shows the microscopic diagram of a plant cell.














Fig. 1.1

(a) Label each of the cell components of the plant cell in Fig 1.1. There are a total of eight
components to be labelled. (Nucleus, Rough endoplasmic reticulum, Mitochondrion,
Chloroplast, Vacuole, Cell membrane, Cell wall, Cytoplasm) [8]



Chapter 2 Organisation of the Organism 13







Chapter 2.indd 13 30/03/2022 3:08 PM

(b) State the role of ribosomes in the cell.



[1]

(c) Plants carry out photosynthesis to manufacture food using sunlight. Based on the cell
components in Fig. 1.1, complete Table 1.1.
Table 1.1
cell component role of component in the plant cell

(i) site for photosynthesis of the plant cell
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(ii) storage for products of photosynthesis
[2]

(d) State two components from the cell that are not found in a human liver cell.


[2]
[Total: 13]

2 Fig. 2.1 shows the diagram of a bacterial cell.

A B C






D E
Fig. 2.1

(a) State the name of five cell components, labelled A to E that are present in the bacterial
cell.

Table 2.1

cell component A B C D E

name

[5]

(b) State three cell components that are present in a photosynthetic plant cell but are not
found in the bacterial cell shown in Fig. 2.1.



[3]

(c) Fig. 2.2 shows a human liver cell.

State two cell components that are present in both liver and bacterial
cells.

Fig. 2.2


[2]
[Total: 10]

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Chapter 2.indd 14 30/03/2022 3:08 PM

3 Xylem is an important tissue that can be found in a vascular plant.

(a) Xylem is made of tissue.
Define the term tissue.





[2]

(b) State two roles of xylem vessels.
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[2]

(c) Which feature of the tissue in (b) helps the cell to carry out its function?





[2]

[Total: 6]

Clone Oct / Nov 2014

4 Fig. 4.1 shows the cells from the lining of the respiratory tract.

Goblet cell

Cell membrane



Nucleus



Cilla Mucus
Fig. 4.1

(a) Based on Fig. 4.1, state two details each for the function of nucleus and cell membrane.

Nucleus





[2]

Cell membrane






[2]






Chapter 2 Organisation of the Organism 15







Chapter 2.indd 15 30/03/2022 3:08 PM

(b) State the level of organisation for a group of ciliated cells as shown on Fig. 4.1.



[1]

(c) Goblet cells secrete mucus to trap microbes that enter the respiratory tract.
State the roles of ciliated cells (cilia) in the trachea.





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[2]
[Total: 7]

5 Fig. 5.1 represents a sperm cell and an egg cell.

A B

Protein coat
D


C


Sperm cell Egg cell
Fig. 5.1

(a) Complete Table 5.1 to state the name for the components A, B, C and D of a sperm cell.

Table 5.1
cell component A B C D
name
[4]

(b) Component C plays an essential role for the survival of the cell.
State the role of this component.





[2]

(c) Human egg cells have a protective protein coat. Using the features shown in Fig. 5.1,
describe how a sperm cell fuses with the egg cell during fertilisation.





[2]

(d) Sperm cells have flagellum that aids in swimming while egg cell is unable to move by itself.
State a way on how the egg cell is transported in the human body.



[1]
[Total: 9]

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Chapter 2.indd 16 30/03/2022 3:08 PM

6 Fig. 6.1 shows a human red blood cell and a bird red blood cell.







Nucleus



Human red blood cell Bird red blood cell
Fig. 6.1
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(a) State the function of red blood cells.



[1]

(b) State three adaptive features of human red blood cells that aid in their functions.





[3]

(c) A significant difference of the red blood cell between humans and birds is the presence
of nucleus in the red blood cells of birds.
Explain why nucleus is not present in human red blood cells.





[2]
[Total: 6]

7 Fig. 7.1 shows a sketch diagram of a red blood cell. ST shows the diameter of the red blood
cell.

















S T
Fig. 7.1

(a) Based on Fig. 7.1, measure and state the length of ST.



[1]








Chapter 2 Organisation of the Organism 17







Chapter 2.indd 17 30/03/2022 3:08 PM

(b) Given that the magnification of the diagram is ×16000, what is the actual diameter of the
red blood cell? Show your calculation.












[3]
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(c) The diagram shows a chart of the level of organisation. Complete the missing part.





Cell Tissue Organism




[2]
[Total: 6]
8 Fig. 8.1 shows a root hair cell.


B
C
A









Fig. 8.1
(a) Name the cell structures A, B and C.

A: [1]

B: [1]

C: [1]

(b) State two ways in which the root hair cells are adapted to carry out their function.





[2]

(c) State one significant difference between the structure of a root hair cell and a palisade
mesophyll cell.



[1]
[Total: 6]


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Chapter 2.indd 18 30/03/2022 3:08 PM

Clone May / June 2013

9 Fig. 9.1 shows a plant seedling.





Fig. 9.1

(a) Make a large drawing of the plant seedling in the space provided.

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[4]
(b) Spiders are classified in the group of arachnids.










P


Q
× 2.5
Fig. 9.2

According to the following steps, find the actual length of the leg that is labelled PQ in
Fig. 9.2.

First, measure the length of the line PQ in Fig. 9.2.
Length of PQ: mm [1]

Then, calculate the actual length of the leg that is labelled PQ, by taking into account the
magnification of the microscope. Show your working in the empty space provided.












Actual length = mm [3]
[Total: 8]







Chapter 2 Organisation of the Organism 19







Chapter 2.indd 19 30/03/2022 3:08 PM

10 Fig. 10.1 shows a flower of a hibiscus plant.








B
A



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× 0.35
Fig. 10.1

(a) Draw a large, labelled diagram of the flower in the space provided.

















[5]

(b) Measure the length of the style labelled AB in the diagram.

Length of style: mm [1]
Use the length of style above and the following formula to calculate the actual length of
the style.

Given the formula:

length of style on the diagram
Magnification =
actual length of style

Show your workings in the empty space provided:

















Actual length = cm [2]
[Total: 8]



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Chapter 2.indd 20 30/03/2022 3:08 PM

Format 210mm X 297mm Extent= 248 pgs (12.66 mm) (70gsm paper) Status: CRC Date: 30/3


Cambridge IGCSE TM redue70% DA1305


ACE YOUR

BIOLOGY






Workbook


Penerbitan Pelangi Sdn Bhd. All Rights Reserved.
Cambridge IGCSE Ace Your Biology is designed to aid students build
TM
the skills required to succeed in the IGCSE Biology Examination. By working
through the questions in the book, students are well equipped with valuable
techniques in answering the examination questions. Cambridge IGCSE TM ACE YOUR BIOLOGY

This workbook is written distinctively based on the Cambridge IGCSE Biology
2020−2022 and 2023−2025 syllabuses for (0610) and (0970) courses. The
scope, sequence and level of the workbook has been constructed to match the
Cambridge IGCSE Year 10 and Year 11 syllabuses.

A wealth of questions in the book sets a benchmark to prepare students for
the examination-based questions at Extended Level, which include both
multiple-choice and structured questions. In addition, this workbook provides
detailed explanation to all the questions in its answer key. Upon completing
the ample questions in this book, students are on their path in developing the
fundamental scientific skills for progression to Cambridge International AS
and A Level, further education, or science-related professions.

About the Author
Daniel Danny Kiiung Jia Hou from Sarawak in Malaysia, graduated from SMK Sacred Heart,
Sibu. He received his Bachelor of Science (Honors) in Wildlife Biology Degree from Institute
of Technology Tralee, Ireland. His greatest achievement was the rehabilitation of a rescued Cambridge IGCSE TM
loggerhead sea turtle (Caretta caretta), Sally which was returned to the Mediterranean Sea after
six months.

Nevertheless, Daniel initiated a wildlife research project in 2018 on the investigation of ‘The Distribution
of New Zealand Land Hooper, Arcitalitrus dorrieni in Ireland’. He cooperated with the National ACE YOUR
Biodiversity Data Centre of Ireland (NBDC) to study the alien species, the only shrimp species that
walks on land, which made its presence on the land of Ireland since 1903. On top of that, Daniel had
the privilege to attend an interview on Radio Kerry Ireland to broadcast his project nationwide.

He is currently a Biology tutor in Teras Murni Education Group, under Homeschool and Broadway BIOLOGY
Academy. Daniel’s education and his experiences in wildlife biology field has provided numerous
opportunities for him to educate students, conducting educational and conservation trips, and raising
awareness on wildlife protection among our next generations. He always keeps this phrase in his mind
“I believe that education is all about being excited about something. Seeing passion and enthusiasm
Workbook
helps push an educational message.”, quoted by his childhood hero, the late Steve Irwin.






www.dickenspublishing.co.uk
DA1305
ISBN: 978-1-78187-263-5

Suite G7-G8, Davina House, 137-149 Goswell Road,
London, EC1V 7ET, United Kingdom.
E-mail: [email protected] Daniel Danny Kiiung Jia Hou