MEMO
SECTION A
Question 1
1.1
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
B
A
C
A
C





(5x2=10)
1.2
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
Potassium nitrate 
Nucleus 
Nervous system 
Non-metal oxide 
pH scale 
(5x1=5)
1.3
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
D
C
E
B
A





1.4 The physical breakdown of food by (chewing) crushing, mashing and churning. 
1.5
1.5.1 Animal cell. 
1.5.2 Irregular shape/no cell wall/small vacuole.  (Any one)
1.5.3 1 = cell membrane,  2 = nucleus,  3 = mitochondrion. 
(5x1=5)
(1)
(1)
(1)
(3)
SECTION A= 26 marks
SECTION B
Question 2
2.1
2.1.1 1 = fallopian tube/oviduct,  2 = ovary, 3 = womb/uterus 
(3)
2.1.2 2 = produces the egg cells or the female sex hormones, 3 = provides a place where the
baby can grow. 
(2)
2.1.3
a) Fertilization – the joining of an egg and a sperm to form a zygote. 
b) Menstruation – breakdown of the thick layer of blood that lines the uterus. 
(4)
[9]
2.2 Digestion: the mechanicaland chemical processes that convert food into nutrients.  (3)
2.3 High blood pressure:  when the force at which blood is being pushed against the ertery
walls is abnormally high. 
Heart attack:  when blood clot blocks the flow of blood to the heart. 
Stroke: when the blood flow to the brain is stopped. (Any two)
(6)
2.4 During breathing, air enters the lungs through two processes.
a) Inhalation and exhalation 
b) Inhalation is an active process that is caused by muscle contraction. 
Exhalation is a passive process that occurs without muscle contraction. 
(2)
(4)
2.5
2.5.1 1 = kidney,  2 = ureter 
(2)
2.5.2 The waste products and the excess water would not be separated from the blood.  (2)
[4]
2.6 No, all the systems work together. 
(2)
SECTION B = 30 marks
SECTION C
Question 3
3.1
3.1.1
3.1.2
3.1.3
3.1.4
Water 
2 hydrogen and 1 oxygen 
Hydrochloric acid 
1 hydrogen and 1 chlorine 
(4)
3.2
3.2.1 C + 2H2 
CH4 
3.3 Metal oxide 
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.5
3.5.1
3.5.2
3.5.3
3.5.4
Red 
Green 
Neutralization 
HCl + NaOH 
(3)
(1)
NaCl + H2O 
(1)
(1)
(1)
(4)
[7]
Sugar water. 
(1)
The oven cleaner’s pH is 15 on the graph. 
(1)
The pH scale only goes up to 14. 
(1)
Sulfuric acid,  milk, sugar water,  ammonia,washing powder, oven cleaner.(6)
[9]
SECTION C = 24 marks
TOTAL: 80 marks