B diseases m and p were caused by the same pathogen c

B. Diseases M and P were caused by the same pathogen.
C. The scientist analysed the DNA fingerprints of the pathogens M and P.
D. The scientist found that the DNA fingerprints of the pathogens M and P differ.
□
© 2019 Aristo Educational Press Ltd. 18

HKDSE BIOLOGY: Connecting Concepts Chapter 1
Question bank Multiple-choice questions
(b) Which conclusion can be drawn from this investigation?
(b) Applying concepts 1
|!|BCEMB0010000040|!|
 SI
In the 1840s, many women died from infections after giving birth in hospitals. A doctor
called Semmelweiss found that the death rate of mothers was higher in ward X than in
ward Y.
Ward X is where medical students dissected corpses and delivered babies. Ward Y is
where midwives delivered babies.
Which of the following is a testable hypothesis for the higher death rate in ward X?
□
##C##
Skill assessed Mark
Applying concepts 1
|!|BCEMC0010000041|!|
Which of the following laboratory rules are correct?
(1) Pay attention to hazard warning labels on reagent bottles.
(2) Wash your hands before eating in the laboratory.
(3) Wear disposable gloves when handling living animals.
(4) Sterilize dissecting instruments after use.
© 2019 Aristo Educational Press Ltd. 19

HKDSE BIOLOGY: Connecting Concepts Chapter 1
Question bank Multiple-choice questions
D. (1), (2), (3) and (4)
□
##B##
Skill assessed Mark
Understanding basic concepts 1
|!|BCEMC0010000042|!|
Which of the following is correct when the result of an experiment does not match the
prediction made based on a hypothesis?
A. There is no conclusion.
B. Assumptions have to be made.
C. The investigation does not require a hypothesis.
D. The hypothesis has to be revised.
□
##D##
Skill assessed Mark
Understanding basic concepts 1
© 2019 Aristo Educational Press Ltd. 20