F4 Biology Test 1:
Introducing biology
A. Multiple
Choice (10marks)
|
Q.
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
|
Answer
|
A
|
C
|
A
|
C
|
D
|
D
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B
|
C
|
B
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D
|
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Wrong no.
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5
|
2
|
22
|
15
|
10
|
11
|
12
|
14
|
6
|
13
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B Conventional questions
1 From top to bottom:
Growth, Nutrition, Reproduction,
Movement, Irritability 1×5
2 Including a group of adults who do not take vitamin D in the study B 1
Increasing
the number of adults in the study A 1
Continuing the study for a longer period of time D 1
3 a Independent
variable: temperature of water 1
Dependent
variable: heart rate 1
Con: Confusion
between IV and DV
b Age of water fleas /
oxygen content of water / pH of water
(any 2 or other correct
answers) 1×2
Con: unable to
suggest CV in an investigation
c To increase the
reliability of the results. /
To reduce the errors due to variations between
water fleas. /
To increase the confidence that the heart rate
obtained are not by chance.
(or other reasonable answers) 1
Con: Don’t know
the purpose of duplicated data
d 3
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Temperature (°C)
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Average heart rate (beat / min)
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10
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39
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15
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62
|
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20
|
92
|
|
25
|
134
|
|
30
|
170
|
|
35
|
80
|
Ss have to bring
along with their calculator in test & exam!
e The heart rate increases as
water temperature increases from 10 to 30 °C. 1 However, the heart rate decreases as water temperature
increases from 30 to 35 °C. 1
Con / Exp: Should pay attention to the detailed change
in the trend of data and
make logical conclusion
based on data
f Change
in temperature during the counting procedure and stress on the water fleas may
affect
the heart rate. (or other
reasonable answers) 1×2
Con: unable to
suggest source of errors in the investigation
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