Page 53 - SK Year 6 Science DLP

MICROORGANISMS
MIKROORGANISMA

7. The graph below is a temperature reading of yeast and sugar solution from
an investigation by Amir, Lim, and Dina to show that yeast breathes and
releases gas.

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Temperature of solution ( o C) 30
32

28
26
3
12
6
9
Time taken (minutes)
a) What observations can be made on the temperature readings of yeast
and sugar solution in this investigation?
b) Based on the observations in (a), provide a suitable inference.
c) What is the relationship between the two variables in this investigation?

4. Tuberculosis is a disease caused by bacterial infection. Symptoms of
8.
tuberculosis include persistent cough for more than two weeks, phlegm with
blood, fever and sweating in the afternoon and evening, fatigue, weight
loss, and loss of appetite.
Data collected by the Ministry of Health Malaysia for four years are
as follows:

Year 2008 2009 2010 2011

Number of cases 17 506 18 102 19 337 14 791
(people)

a) What is the cause of tuberculosis?
b) In which year the number of cases recorded is the highest?
c) How can we prevent ourselves from getting infected with this
contagious disease?
d) What is the trend in the number of tuberculosis cases for the past four
consecutive years?
e) Transfer the data on the number of tuberculosis cases for the four
consecutive years in the form of a bar chart.

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