Marking scheme
1 Introduction to biology
A.
Multiple-choice questions (10 marks)
1.
A
2.
B
3.
C
4.
A
5.
D
6.
C
7.
D
8.
A
9.
D
10.
C
(1 mark each)
B.
Short questions (10 marks)
1.
(a)
Organisms break down food in their cells through respiration to release energy for body
activities.
(1)
(b)
nutrition
(1)
(c)
reproduction
(1)
(d)
Organisms detect changes in their environment and respond to them.
(1)
(Total: 4 marks)
2.
(a)
observation
(1)
(b)
ask question
(1)
(c)
hypothesis
(1)
(d)
experiment
(1)
(e)
assumption
(1)
(f)
prediction
(1)
(Total: 6 marks)
C.
Structured question (7 marks)
1.
(a)
He found that a mould was growing on the agar.
(1)
He noticed that the bacteria could not grow close to the mould.
(1)
(b)
The mould produced a substance which killed the bacteria.
(1)
(c)
Any one of the following:
(d)

It is non-toxic to human. (1)

It can maintain its activity after extraction. (1)

It can be easily isolated / purified. (1)
(max. 1)
He left the plates uncovered.
(1)
He left the plates near an open window.
(1)
The bacteria might spread to the environment through the air.
(1)
(Total: 7 marks)
HKDSE BIOLOGY—Concepts and Applications
© Aristo Educational Press Ltd.
Chapter Test 1-M1