RESPIRATION

Introduction ? Definition and importance of respiration.
Burning food.

By the end of the lesson, the learner should be able to:
By the end of the lesson, the learner should be able:
To define respiration.
To explain significance of respiration.
To describe an experiment investigating the gas given off when food is burnt.

Q/A: Definition
Brief discussion of significance of respiration.
Teacher demonstration: Burning a food sample.
Testing for the gas evolved during combustion.

text book

K.L.B. BK 2
PP. 73-74

RESPIRATION

The mitochondrion.
Aerobic respiration.
Anaerobic respiration.

By the end of the lesson, the learner should be able to:
To state functions of mitochondrion in respiration.
To explain phases of aerobic respiration.
To state difference between aerobic and anaerobic respiration.
To describe anaerobic respiration.

Drawing structure of the mitochondrion.
Explain function of the mitochondrion.
Detailed discussion.
Writing down equations of food breakdown.
Observe set up experiments.
Detailed discussion punctuated with probing questions:

Wall charts- The mitochond-rion
text book
Glucose
Yeast
Thermometer

K.L.B. BK 2
P. 74
K.L.B. BK 2
PP.74-76

RESPIRATION

Oxygen ?debt?.

By the end of the lesson, the learner should be able to:
To explain the term ?oxygen debt?.
To explain the effect of ?oxygen debt? on the amount of energy released during respiration.

Probing questions.

Detailed discussion.

text book

K.L.B. BK 2
P.78

RESPIRATION

Applications of anaerobic respiration.

By the end of the lesson, the learner should be able to:
To explain applications of anaerobic respiration.

Q/A: Products of fermentation process.
Listing down various applications of anaerobic respiration.

text book

K.L.B. BK 2
P. 79

RESPIRATION

Respiratory substrates & respiratory quotient.
Rate of respiration.

By the end of the lesson, the learner should be able to:
To identify respiratory substrates in the body.
To define respiratory quotient.
To calculate R.Q.
To state and explain factors affecting rate of respiration.

Brief discussion/ explanations.

Exposition of definition and its significance.
Problem solving.
Detailed discussion and explanations.

text book

K.L.B. BK 2
P. 79
K.L.B. BK 2
PP. 80-81

EXCRETION AND HOMEOSTASIS

The mammalian skin.

By the end of the lesson, the learner should be able to:
Draw and label the structure of the mammalian skin.
To describe functions of parts of the mammalian skin.

Permanent slides of mammalian skin.

K.L.B. BK 2
PP. 86-87

EXCRETION AND HOMEOSTASIS

The lungs.

By the end of the lesson, the learner should be able to:
To explain the role of lungs as excretory organs.

Exposition and discussion.

Chart/ model- Mammalian lungs.

K.L.B. BK 2
P. 87

EXCRETION AND HOMEOSTASIS

The kidneys structure.
The nephron.

By the end of the lesson, the learner should be able to:
To describe the external structure of kidney.
To describe the internal structure of the kidney.
Describe features of the nephron.

Observe external features of a kidney.
Observe internal drawing and labeling of the kidney.
Discuss features of the nephron.
Draw structure of the nephron.
Label the diagram.

Wall-Charts?internal organs of a kidney.

Chart?Kidney nephron.

K.L.B. BK 2
PP. 89-90

EXCRETION AND HOMEOSTASIS

Urine formation.
The loop of Henle.

By the end of the lesson, the learner should be able to:
To explain formation of urine.
To explain the function of the loop of Henle; and how it?s adapted to its function.
To discuss the role of ADH in determination of concentration of urine.

Detailed discussion.
Discussion and explanations.
Probing questions.

chart
Chart-
The nephron.

K.L.B. BK 2 PP 90

EXCRETION AND HOMEOSTASIS

Kidney diseases and disorders.
The Liver.

By the end of the lesson, the learner should be able to:
To name kidney diseases and disorders and state methods of prevention and / treatment.
To draw and label a diagram of the liver.

Discussion and Explanations.
Drawing and labeling diagram of the liver.

text book
Chart-Structure of the liver

K.L.B. BK 2 PP 92

EXCRETION AND HOMEOSTASIS

Deamination.
Other functions of the liver.
Liver disorders.
Homeostasis.

By the end of the lesson, the learner should be able to:
To explain the function of the liver in deamination.
To state and explain other functions of the liver.
To name and discuss kidney disorders.
To identify methods of preventing and treating these disorders.
To define the concepts of internal environment and homeostasis.

Probing questions.
Discussion
Exposition and discussion.

text book

K.L.B. BK 2 PP 95
K.L.B. BK 2 PP 96-97

EXCRETION AND HOMEOSTASIS

The feedback mechanism.

By the end of the lesson, the learner should be able to:
To differentiate between positive and negative feedback and state their roles in maintaining the desirable point.

Schematic representation of feedbacks.

Exposition and discussion.

Chart-
Schematic diagram of feedback mechanism

K.L.B. BK 2 PP 97-98

EXCRETION AND HOMEOSTASIS

The hypothalamus.
The skin and thermoregulation.

By the end of the lesson, the learner should be able to:
To explain the role of hypothalamus in thermoregulation.
To explain the function of the skin in thermoregulation.

Exposition and detailed discussion.
Exposition and discussion.

text book

K.L.B. BK 2 PP 98

EXCRETION AND HOMEOSTASIS

Blood vessels and their functions in thermo-regulation.
Homeostatic behavioral activities.
Osmoregulation.
Blood sugar.

By the end of the lesson, the learner should be able to:
To explain the adaptation of blood vessels and their function in thermo-regulation.
To state and explain various homeostatic behavioral activities.
To describe water and salts balance in the body.
To discuss effects of insufficient/ excess sugar in the blood.
To explain regulation of blood sugar.

Exposition and discussion.
Drawing schematic diagrams.
Discussion on control of body temperature.
Probing questions.
Detailed discussion.

text book
text book,video

K.L.B. BK 2 PP 98-99
K.L.B. BK 2 PP 100-101

EXCRETION AND HOMEOSTASIS

Diabetes.

By the end of the lesson, the learner should be able to:
To distinguish diabetes mellitus from diabetes inspidus.
To identify simple symptoms of diabetes mellitus and diabetes inspidus.

Detailed discussion.

Probing questions.

Topic review.

text book

K.L.B. BK 2 PP  103