Berry List of Biology Experiments (PEKA) Form 4 (Part 7)

by BerryBerryTeacher

in Berry Experiment (Experiments & PEKA)

This post is the list of PEKA experiments for SPM Biology Form 4 from Berry Berry Easy. It is advisable that students read all of these experiments from Chapter 7: Respiration before heading in so as to be better prepared. So do read this post.

Berry List of Biology Experiments (PEKA) Form 4 (Part 7)

peka-spm-biology-chapter-7

Chapter 7 – Respiration

List of PEKA experiments:

  1. Studying the process of aerobic respiration
  2. Investigate the process of anaerobic respiration in yeast
  3. Comparing the total surface area of a flat card with that of a corrugated card
  4. Observing graphics and live specimens of respiratory structures
  5. Constructing a model of the human lungs to explain the breathing mechanisms in human
  6. Investigating the difference between inhaled and exhaled air in terms of oxygen and carbon dioxide contents
  7. Investigating the differences between inhaled and exhaled air in terms of heat content
  8. Studying the effects of vigorous exercise on the breathing and heartbeat rates
  9. Demonstrating the effects of cigarette smoke on lung

Creative Corner:

  1. Constructing a model of the rib cage to demonstrate the actions of the intercostals muscles and ribs
Number Activity 7.1 (Observation)
Pg. 83
Title Studying the process of aerobic respiration
Aim / Objective of the Study To study the process of aerobic respiration
Material
  • Coloured liquid
  • Living organism (cockroach)
  • Soda lime
  • Petroleum jelly (Vaseline)
  • Water
Apparatus
  • Boiling tubes
  • 500 ml beaker
  • 250 ml beakers
  • Capillary tubes
  • Rubber tubings
  • Screw clips
  • Ruler
  • Wire gauze
Technique used Measure and record the heights of the coloured liquids in the capillary tubes with a ruler

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Number Activity 7.2 (Experiment)
Pg. 85
Title Investigate the process of anaerobic respiration in yeast
Aim / Objective of the Study To investigate the process of anaerobic respiration in yeast
Problem Statement What are the products of fermentation?
Hypothesis In the absence of oxygen, yeast undergoes anaerobic respiration to produce carbon dioxide, ethanol and energy
Variables
  • Manipulated variable: Presence of yeast
  • Responding variable: Changes on lime water and temperature
  • Fixed variable: Anaerobic condition
Material
  • 5% yeast suspension
  • 5% glucose solution
  • Paraffin oil
  • Lime water
Apparatus
  • Boiling tubes
  • Test tubes
  • Thermometers
  • Stoppers with delivery tubes
  • Measuring cylinders
  • Beaker
Technique used
  • Record and measure the changes in temperature with thermometers.
  • Observe the change in lime water.

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Number Activity 7.3 (Observation)
Pg. 87
Title Comparing the total surface area of a flat card with that of a corrugated card
Aim / Objective of the Study To compare the total surface area of a flat card with that of a corrugated card
Material
  • A piece of card measuring 20 cm x 20 cm
Apparatus -
Technique used Compare and make inference on the various adaptation of the respiratory structures

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Number Activity 7.4 (Simulation)
Pg. 88
Title Observing graphics and live specimens of respiratory structures
Aim / Objective of the Study To study and observe graphics and live specimens of respiratory structures
Material
  • Charts
  • Computer courseware
  • Cockroach
  • Frog
  • Fish
  • Cotton wool
  • Chloroform
  • Gloves
  • Garbage bags
Apparatus
  • Sharp knife
  • Magnifying lens
  • Dissecting tray
  • Pins
  • A pair of scissors
  • Scalpel
  • A pair of forceps
  • Container
Technique used Observe graphics and live specimens of respiratory structures

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Number Activity 7.5 (Simulation)
Pg. 91
Title Constructing a model of the human lungs to explain the breathing mechanisms in human
Aim / Objective of the Study To construct a model of the human lungs to explain the breathing mechanisms in human
Material
  • Two balloons
  • A piece of rubber sheet
  • A rubber stopper
  • Some string
Apparatus
  • Bell jar
  • Y-shaped tube
  • Glass tubes
Technique used
  • Construct a model of the human lungs
  • Study and explain the breathing mechanisms in human by referring the model

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Number Creative corner
Pg. 92
Title Constructing a model of the rib cage to demonstrate the actions of the intercostals muscles and ribs
Aim / Objective of the Study To construct a model of the rib cage to demonstrate the actions of the intercostals muscles and ribs
Material
  • Plywood
  • Nails
  • Rubber bands
Apparatus -
Technique used
  • Construct a model of the rib cage
  • Study and demonstrate the actions of the intercostals muscles and ribs

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Number Activity 7.6 (Experiment)
Pg. 93
Title Investigating the difference between inhaled and exhaled air in terms of oxygen and carbon dioxide contents
Aim / Objective of the Study To investigate the difference between inhaled and exhaled air in terms of oxygen and carbon dioxide contents
Problem Statement Are the contents of oxygen and carbon dioxide in inhaled air the same as those on exhaled air? / does inhaled air contain the same amount of oxygen and carbon dioxide as exhaled air?
Hypothesis Inhaled air has a higher percentage of oxygen when compared to exhaled air. Exhaled air has a higher percentage of carbon dioxide when compared to inhaled air.
Variables
  • Manipulated variable: Inhaled air and exhaled air
  • Responding variable: Percentages of oxygen and carbon dioxide
  • Fixed variable: Method of analysis
Material
  • Potassium hydroxide solution
  • Potassium pyrogallate solution
Apparatus
  • J-tube
  • Boiling tubes
  • Rubber tubing
  • Ruler
  • Washbasin
Technique used Measure and observe the length of air columns occupied by gases in a J-tube with a ruler

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Number Activity 7.7 (Experiment)
Pg. 96
Title Investigating the differences between inhaled and exhaled air in terms of heat content
Aim / Objective of the Study To investigate the differences between inhaled and exhaled air in terms of heat content
Problem Statement Is the heat content in inhaled air the same as that in exhaled air?
Hypothesis Exhaled air has higher heat content when compared to inhaled air
Apparatus
  • Thermometer
Technique used Measure and record the change in temperature with a thermometer

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Number Activity 7.8 (Experiment)
Pg. 97
Title Studying the effects of vigorous exercise on the breathing and heartbeat rates
Aim / Objective of the Study To study the effects of vigorous exercise on the breathing and heartbeat rates
Problem Statement What is the effect of vigorous exercise on the breathing and heartbeat rates?
Hypothesis Vigorous exercise increases the breathing and heartbeat rates
Variables
  • Manipulated variable: Resting or vigorous exercise
  • Responding variable: Breathing rate and heartbeat rate
  • Fixed variable: The type and duration of exercise, gender and age of the students
Material -
Apparatus
  • Stopwatch
Technique used Count and record the number of breaths per minute and the number of heartbeats per minute

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Number Activity 7.9 (Experiment)
Pg. 99
Title Demonstrating the effects of cigarette smoke on lungs
Aim / Objective of the Study To show the effects of cigarette smoke on lungs
Problem Statement What are the effects of cigarette smoke on lungs?
Hypothesis Cigarette smoke corrodes the cotton wool to change colour and contains acidic gas.
Variables -
Material
  • Cotton wool
  • Universal indicator
  • Cigarettes
Apparatus
  • U-tube
  • Thermometer
  • Boiling tube
  • Retort stand and clamp
  • Filter pump
  • Rubber tubing
Technique used Observe the effect of cigarette smoke on lungs and increases the temperature of the respiratory tract. Tobacco tar makes the lungs appear brownish.

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December 28, 2012
March 11, 2013

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