1. IGCSE Biology Concepts Revision Chapter 1 to 8
Chapter number: 1 & 2: Classification & Cells
Answer the following Questions:
Q1) Define the following:
1) Excretion:
___________________________________________________________________________________
_________________________________________________________________________________[1]
2) Growth:
___________________________________________________________________________________
_________________________________________________________________________________[1]
3) Movement:
___________________________________________________________________________________
_________________________________________________________________________________[1]
4) Nutrition:
___________________________________________________________________________________
_________________________________________________________________________________[1]
5) Reproduction:
___________________________________________________________________________________
_________________________________________________________________________________[1]
6) Respiration:
___________________________________________________________________________________
_________________________________________________________________________________[1]
8) Sensitivity:
___________________________________________________________________________________
_________________________________________________________________________________[1]
9) Organelle:
___________________________________________________________________________________
_________________________________________________________________________________[1]

2. 10) Tissue:
___________________________________________________________________________________
_________________________________________________________________________________[1]
11) Organ:
___________________________________________________________________________________
_________________________________________________________________________________[1]
12) Organ System:
___________________________________________________________________________________
_________________________________________________________________________________[1]
Q2) Write down two characteristics of the following:
a) Fishes:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
b) Amphibians:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
c) Reptiles:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
d) Birds:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
e) Mammals:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
f) Arthropods:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]

3. g) Insects:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
h) Crustaceans:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
g) Arachnids:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
h) Myriapods:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
i) Annelids:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
j) Nematodes:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
k) Molluscs:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
l) Flowering plants:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
m) Bacteria:
1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
n) Fungi:

4. 1)__________________________________________________________________________________
2)________________________________________________________________________________[2]
Q3) Write three differences between animal and plant cells:
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[3]

9. Chapter number: 3 & 4: Movements in and out of the cells & The Chemicals of Life
Answer the following Questions:
Q1) Define the following:
1) Diffusion:
___________________________________________________________________________________
_________________________________________________________________________________[1]
2) Osmosis:
___________________________________________________________________________________
_________________________________________________________________________________[1]
3) Active Transport:
___________________________________________________________________________________
_________________________________________________________________________________[1]
Q2) What is meant by turgid cell?
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q3) Name the part of the plant cell which is:
a) fully permeable: _________________________________________________________________[1]
b) partially permeable: ______________________________________________________________[1]
Q4) List three examples of diffusion in living organism:
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[3]
Q5) What happens to an animal cell in pure water:
F___________________________________________________________________________________

10. ___________________________________________________________________________________
_________________________________________________________________________________[2]
Q6) Explain why diffusion happens faster when the temperature.
j___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q7) State three functions of proteins in living organisms.
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[3]
Q8) Give one example and use of a protein.
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[3]
Q9) Complete the following table:
Carbohydrates Fats Proteins
Elements they contain
Solubility in water
Smaller molecules of
which they are made

11. Chapter number: 5 : Enzymes
Answer the following Questions:
Q1) Define the following:
1) Catalyst:
___________________________________________________________________________________
_________________________________________________________________________________[1]
2) Enzymes:
___________________________________________________________________________________
_________________________________________________________________________________[1]
Q2) What are the catalyst inside a living organism called?
_________________________________________________________________________________[1]

12. Q3) Which kind of reactions inside a living organism are controlled by enzymes?
_________________________________________________________________________________[2]
Q4) Give one example of a carbohydrase.
_________________________________________________________________________________[1]
Q5) Why are enzymes damaged at high temperature?
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[3]
Q6) Name the substance for each of the following:
a) Pectinase: ________________________________________________________________________
b) Isomerase: _______________________________________________________________________
c) Amylase: _________________________________________________________________________
Q7) Explain the following:
a) Substrate:
___________________________________________________________________________________
_________________________________________________________________________________[2]
b) Product:
___________________________________________________________________________________
_________________________________________________________________________________[2]
c) Active site:
___________________________________________________________________________________
_________________________________________________________________________________[2]
d) Denature:
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q8) a) Name the organism that is used to make the antibiotic penicillin.
_________________________________________________________________________________[1]
b) What is an antibiotic?
_________________________________________________________________________________[1]
Q9) Complete the following the table:

13. Q10) Table 10.1 lists some of the food materials that need to be digested, the enzymes that
carry out the digestion and the end products.
Complete Table 10.1.
Table 10.1
food material digestive enzyme end products of digestion
starch __________________ simple sugars
__________________ __________________ amino acids
fat lipase
__________________
__________________
[5]
Chapter number: 6 & 7 : Animal and Plant Nutrition
Answer the following Questions:
Q1) Define the following:
1) Nutrition:
___________________________________________________________________________________
_________________________________________________________________________________[1]
2) Photosynthesis:
___________________________________________________________________________________
_________________________________________________________________________________[1]
3) Limiting Factor:
Type of
Carbohydrate
Example Role in living organism
monosaccharide Glucose
polysaccharide The form in which plants store energy
Cellulose
Glycogen

14. ___________________________________________________________________________________
_________________________________________________________________________________[1]
4) Digestion:
___________________________________________________________________________________
_________________________________________________________________________________[1]
5) Ingestion:
___________________________________________________________________________________
_________________________________________________________________________________[1]
6) Egestion:
___________________________________________________________________________________
_________________________________________________________________________________[1]
7) Assimilation:
___________________________________________________________________________________
_________________________________________________________________________________[1]
Q2) a) What are the nutrients of a balance diet?
___________________________________________________________________________________
_________________________________________________________________________________[3]
b) Which of these are:
i) organic: ________________________________________________________________________
ii) inorganic: _____________________________________________________________________[2]
c) Which of this can provide energy?
_________________________________________________________________________________[1]
d) What is the role of fiber?
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q3) What is coronary heart disease?
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q4) Give three examples of deficiency disease?
___________________________________________________________________________________
___________________________________________________________________________________

15. _________________________________________________________________________________[3]
Q5) Name the five limiting factors of photosynthesis of a plant.
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[5]
Q6) Describe how the followings are done.
a) test for starch:
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[5]
b) chlorophyll is need for a plant:
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[5]
c) carbon dioxide is need for a plant:
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[5]

16. d) light is need for a plant:
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[5]
e) oxygen is produced in photosynthesis:
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[5]
Chapter number: 8: Transport
Answer the following Questions:
Q1) Define the following:
1) Transpiration:
___________________________________________________________________________________
_________________________________________________________________________________[1]
2) Translocation:
___________________________________________________________________________________
_________________________________________________________________________________[1]
Q2) What is double circulation?
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q3) Which side of the heart contain oxygenated blood?
_________________________________________________________________________________[1]
Q4) What kind of muscle is found in the heart?
_________________________________________________________________________________[2]

17. Q5) What is the function of coronary arteries?
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q6) What is pace maker?
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q7) List two functions of capillaries?
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q9) What is hemoglobin?
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q10) Where are red blood cells made?
_________________________________________________________________________________[2]
Q11) Name the five components of plasma?
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[5]
Q12) a) What is tissue fluid?
___________________________________________________________________________________
_________________________________________________________________________________[2]
b) Give is two functions?
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q13) By what process does water and minerals enters the root hair?
___________________________________________________________________________________
_________________________________________________________________________________[2]

18. Q14) What is the function of the root cap?
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q15) What are the differences between the following:
a) blood and lymph:
___________________________________________________________________________________
_________________________________________________________________________________[2]
b) diastole and systole:
___________________________________________________________________________________
_________________________________________________________________________________[2]
c) artery and vein:
___________________________________________________________________________________
_________________________________________________________________________________[2]
d) deoxygenated blood and oxygenated blood
___________________________________________________________________________________
_________________________________________________________________________________[2]
e) atrium and ventricle:
___________________________________________________________________________________
_________________________________________________________________________________[2]
f) heptatic vein and heptatic portal vein
___________________________________________________________________________________
_________________________________________________________________________________[2]
g) red blood cells and white blood cells:
___________________________________________________________________________________
_________________________________________________________________________________[2]
h) xylem and phloem:
___________________________________________________________________________________
_________________________________________________________________________________[2]

19. i) diffusion and active transport:
___________________________________________________________________________________
_________________________________________________________________________________[2]
Q14) Explain how water is absorbed by plants roots.
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
___________________________________________________________________________________
_________________________________________________________________________________[3]