RESPIRATION

Introduction – Definition and importance of respiration.

By the end of the lesson, the learner should be able:          To define respiration.  To explain significance of respiration.

Q/A: Definition Brief discussion of significance of respiration.

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

Teacher demonstration: Burning a food sample.      Testing for the gas evolved during combustion.

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

Drawing structure of the mitochondrion. Explain function of the mitochondrion.

K.L.B. BK 2 PP. 74

To explain phases of aerobic respiration.        To state difference between aerobic and anaerobic respiration.

Detailed discussion. Writing down equations of food breakdown.

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

Observe set up experiments. Detailed discussion punctuated with probing questions:

K.L.B. BK 2 PP. 77

To explain the term “oxygen debt”.                To explain the effect of “oxygen debt” on the amount of energy released during respiration.

K.L.B. BK 2 PP. 78

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

K.L.B. BK 2 PP. 79

Respiratory substrates  & respiratory quotient.

To identify respiratory substrates in the body.                To define respiratory quotient.            To calculate R.Q.

Brief discussion/ explanations. Exposition of definition and its significance. Problem solving.

K.L.B. BK 2 PP. 79

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

EXCRETION AND HOMEOSTASIS

Introduction- Definition and importance of homeostasis and excretion.

To define homeostasis and excretion.          To explain necessity of excretion in plants and animals.

Q/A: Definitions of digestion, ingestion and egestion, secretion and excretion.  Discuss importance of excretion in plants and animals.

K.L.B. BK 2 PP. 83-84

To name plants excretory products.          To state uses of excretory products of plants.

Probing questions. Exposition of new terms.        Discuss uses and abuses of plant excretory products.

K.L.B. BK 2 PP. 83-84

Q/A: Review diffusion, structure of an amoeba.    Discuss excretion and homeostasis in an amoeba and a paramecium.

K.L.B. BK 2

Exposition and discussion. Observe drawings of various animals showing excretory organs.

K.L.B. BK 2 PP. 85

State functions of the mammalian skin as an excretory organ.

Draw and label the structure of the mammalian skin.

Draw and label the structure of the mammalian skin.                To describe functions of parts of the mammalian skin.

To explain the role of lungs as excretory organs.

Chart/ model- Mammalian lungs.

To describe the external structure of kidney.              To describe the internal structure of the kidney.

Observe external features of a kidney.      Observe internal drawing and labeling of the kidney.

Wall-Charts—internal organs of a kidney.

Discuss features of the nephron. Draw structure of the nephron. Label the diagram.

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.

Discussion and explanations. Probing questions.

Chart-Schematic diagram of feedback mechanism

Discussion on control of body temperature.
Probing questions.

To discuss effects of insufficient/ excess sugar in the blood.

To explain regulation of blood sugar.

To distinguish diabetes mellitus from diabetes inspidus.
To identify simple symptoms of diabetes mellitus and diabetes inspidus.