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Biology questions, chapter 1
Nama / NameKelas / ClassTarikh / Date

Introduction to Biology and Laboratory Rules

47 marks. Use Practice to check each answer as you go, or Exam to answer everything against the clock first.

Section A: objective questions

12 marks
Choose the best answer for each question.
1

Question 1

The word biology comes from the Greek words bios and logos. What do they mean?
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B
Bios means life and logos means study.
For the teacher: Remembering, low difficulty, standard 1.1
Textbook p. 4
2

Question 2

Which field of biology studies microorganisms?
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D
Microbiology is the study of microorganisms. Botany is plants, genetics is inheritance, ecology is interactions with the environment.
For the teacher: Remembering, low difficulty, standard 1.1
Textbook p. 4
3

Question 3

Which is an example of the contribution of biology to agriculture?
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A
Hydroponic and aeroponic technology and transgenic crops belong to agriculture. Insulin is pharmaceutical, gene therapy is medical, tempe is food production.
For the teacher: Understanding, low difficulty, standard 1.1
Textbook p. 5
4

Question 4

What is the function of a fume hood?
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C
A fume hood prevents inhaling hazardous gases such as chlorine, bromine and nitrogen dioxide.
For the teacher: Remembering, low difficulty, standard 1.2
Textbook p. 6
5

Question 5

A pupil sees a solution with pH 12 in a beaker. What should be done with it after the experiment?
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A
Only pH 5 to 9 can be poured into the sink; pH 12 cannot.
For the teacher: Understanding, low difficulty, standard 1.2
Textbook p. 7
6

Question 6

Used needles and scalpels after an experiment should be placed in
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B
Category A sharp waste goes into a special sharps bin which does not need to be sterilised.
For the teacher: Applying, medium difficulty, standard 1.2
Textbook p. 8
7

Question 7

At what conditions are biological wastes decontaminated in an autoclave?
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C
The textbook states 121 °C, 15 psi, 20 minutes.
For the teacher: Remembering, low difficulty, standard 1.2
Textbook p. 8
8

Question 8

Mercury is spilt on the laboratory floor. After informing the teacher and restricting the area, what should be sprinkled over it?
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D
Sulphur is used to cover mercury spills; sand is used for general chemical spills.
For the teacher: Applying, medium difficulty, standard 1.2
Textbook p. 9
9

Question 9

Which action is correct if a fire breaks out?
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B
Stop work, switch off power sources and exit by the emergency exit without collecting belongings.
For the teacher: Understanding, medium difficulty, standard 1.2
Textbook p. 9
10

Question 10

In a table of results, where is the manipulated variable placed?
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D
The manipulated variable is placed in the left column, the responding variable in the right.
For the teacher: Understanding, medium difficulty, standard 1.3
Textbook p. 11
11

Question 11

Which graph has bars of equal width touching each other, used for data grouped into ranges?
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A
A histogram uses touching bars for grouped data. A bar chart has separate bars.
For the teacher: Remembering, low difficulty, standard 1.3
Textbook p. 12
12

Question 12

A specimen is 1.2 cm long and its drawing is 3.6 cm long. What is the magnification?
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C
3.6 / 1.2 = 3x.
For the teacher: Applying, medium difficulty, standard 1.3
Textbook p. 13

Section B: structured questions

35 marks
Answer all questions. Write your answers in the spaces provided.
13

Question 13

State the function of each laboratory safety item.
[1 mark] (a)Goggles
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[1 mark] (b)Lab shoes
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[1 mark] (c)Emergency shower
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[1 mark] (d)Laboratory gloves
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For the teacher: Remembering, low difficulty, standard 1.2
Textbook p. 7
14

Question 14

Biological waste from an experiment is sorted into categories before disposal.
[1 mark] (a)Name the category of used petri dishes and gloves.
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[2 marks] (b)Describe how this waste is managed before disposal.
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[2 marks] (c)State the autoclave temperature and time.
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[1 mark] (d)Why must biohazard bags not be thrown into ordinary waste baskets?
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For the teacher: Understanding, low difficulty, standard 1.2
Textbook p. 8
15

Question 15

A bottle of mercury breaks in the laboratory.
[1 mark] (a)State the first action a pupil must take.
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[2 marks] (b)Describe two other steps to handle the spill.
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Any 2 points
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[2 marks] (c)Explain why mercury cannot be washed into the sink.
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Tick each point you got.
For the teacher: Applying, medium difficulty, standard 1.2
Textbook p. 9
16

Question 16

The graph shows the volume of oxygen released by an aquatic plant at different temperatures (30 °C: 2.0 cm³; 40 °C: 14.0 cm³; 50 °C: 12.0 cm³; 60 °C: 6.0 cm³; 70 °C: 3.0 cm³).
Line graph of oxygen volume against temperature
Graph of the data
[2 marks] (a)State the manipulated variable and the responding variable.
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Tick each point you got.
[1 mark] (b)State the temperature at which most oxygen was released.
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[2 marks] (c)State which axis the responding variable is plotted on and suggest a title for the graph.
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[1 mark] (d)Describe the trend of the graph above 40 °C.
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For the teacher: Analysing, medium difficulty, standard 1.3
Textbook p. 11
17

Question 17

A pupil investigates the effect of vigorous activity on pulse rate.
[1 mark] (a)State a suitable hypothesis.
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[3 marks] (b)Identify the manipulated, responding and one fixed variable.
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[1 mark] (c)Which instrument is needed to time the pulse count?
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[1 mark] (d)Why must the pupil sit quietly before the first pulse count?
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For the teacher: Applying, high difficulty, standard 1.4
Textbook p. 15
18

Question 18

Diagrams of body parts are described using planes and directions.
[1 mark] (a)Name the plane that divides the body into right and left parts.
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[1 mark] (b)Name the plane that divides the body into upper and lower parts.
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[2 marks] (c)Is the nose anterior or posterior to the ear? Explain.
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For the teacher: Understanding, low difficulty, standard 1.3
Textbook p. 13
19

Question 19

A pupil records data and makes a biological drawing of a cross section of a carrot.
[2 marks] (a)State two characteristics of a good biological drawing.
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Any 2 points
Tick each point you got.
[2 marks] (b)The carrot is 2.5 cm across and the drawing is 7.5 cm across. Calculate the magnification.
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Tick each point you got.
For the teacher: Understanding, medium difficulty, standard 1.3
Textbook p. 12