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

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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.
© 2019Aristo Educational Press Ltd.18
HKDSE BIOLOGY: Connecting ConceptsChapter 1Question bankMultiple-choice questions(b)Which conclusion can be drawn from this investigation?
(b)Applying concepts1|!|BCEMB0010000040|!|SIIn the 1840s, many women died from infections after giving birth in hospitals. A doctorcalled Semmelweiss found that the death rate of mothers was higher in ward X than inward Y.Ward X is where medical students dissected corpses and delivered babies. Ward Y iswhere midwives delivered babies.Which of the following is a testable hypothesis for the higher death rate in ward X?
##C##Skill assessedMarkApplying concepts1|!|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.
© 2019Aristo Educational Press Ltd.19
HKDSE BIOLOGY: Connecting ConceptsChapter 1Question bankMultiple-choice questionsD.(1), (2), (3) and (4)##B##Skill assessedMarkUnderstanding basic concepts1|!|BCEMC0010000042|!|Which of the following is correct when the result of an experiment doesnotmatch theprediction 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 assessedMarkUnderstanding basic concepts1© 2019Aristo Educational Press Ltd.20
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