Republic of the PhilippinesDepartment of Education

Region IV-A CALABARZONDivision of Lipa City

Anilao National High SchoolAnilao, Lipa City

I. Objectives Define Aerobic Respiration Describe the 3 major steps of aerobic respiration ( glycolysis, Kreb’s

Cycle and Electron Transport Chain) Illustrate the three major steps of aerobic respiration Realize the importance of aerobic respiration to both chemothropic

( animals) and phototrophic (plants) organisms.

II. Subject Mattera. Topic: Cellular Respirationb. Sub topic: Aerobic Respiration and it’s 3 major stepsc. References: Biology Textbook pp. 63 – 64,

Basic Biology by Zenaida Realuyo pp. 50 – 54 http://www.wikipedia.com//aerobic.respiration

d. MaterialsFor Teachers For Students

Puzzled Picture Manila paperChalk and Board MarkerIllustrations Book

III. Lesson DevelopmentTeacher’s Activity

A. Daily Routinea. Prayerb. Greetings

Good Morning Class! c. Checking of Attendance and Assignment

B. Recall Last meeting we discussed about the cellular respiration, as sort of review, I have here a jumbled puzzle. Each piece of this jumbled puzzle has the corresponding question regarding of the previous topic. So what you’re going to do is to answer the question before we started to post the puzzle on the board. This puzzle correspond what will be our topic for today.

Do I make my instructions clear?

Students’ Activity

Good Morning, sir!

Yes, sir.

It seems that you really understand our previous topic.

C. MotivationThe student will arrange the puzzle posted on the board.

So class, what is the word being formed?

Precisely! What do you think will be our topic for today?Very good!

D. Lesson Proper1. Pre – Activity

a. PresentationAerobic respiration is the process of releasing energy (ATP) from the food molecule (glucose) which requires Oxygen. The complete breakdown of glucose consists of three main steps. We have the Glycolysis, Kreb’s Cycle and Electron Transport Chain.

Today, we will be able to discuss Aerobic respiration and it’s 3 main steps, and we will be able to realize the importance of aerobic respiration to all organism that undergo to this process.

So class, get ready!

b. Discussion of Procedure I will group you into 4. Each group will be given 5 minutes to the task.

c. Points to Remember But before we start out task, I want you to introduce my friend NARUTO and he has a message to each and every one of you.

d. Distribution of Materials (The students will get their materials from their teacher.)

Aerobic Respiration

Aerobic Respiration

Yes Sir.

N – oise must be avoided A – ttentive listening R – ead the direction carefully U – nderstand the direction and

instructions T – ime management O – bserve cleanliness

2. Activity proper (Refer to activity sheet provided by the teacher.)

Guide Questions:Group No. 1 1. What is Cellular Respiration?2. What is Aerobic Respiration?3. Give the three major steps of

aerobic respiration.

Group No. 21. What is Glycolysis?2. Describe the process of Glycolysis.3. What are the materials involve in

the process of glycolysis?

Group No. 31. What is Kreb’s Cycle?2. Describe the process of Kreb’s

Cycle.3. What are the materials involve in

the process of Kreb’s Cycle?

Group No. 41. What is Electron Transport Chain?2. Describe the process of Electron

Transport Chain.3. What are the materials involve in

the process of Electron Transport Chain.

3. Post Activity a. Presentation of Output

b. Discussion and Analysis of Data

Okay class, let’s analyze your work if they are correct.

How would you define Cellular Respiration?

Very Good!

You mentioned Aerobic Respiration, what is meant to Aerobic respiration?

Precisely!

What are the three major steps in breakdown of food molecule to release energy?

It is a process which releases energy inside of each of the body’s cells. It is divided into two kinds, the aerobic respiration that requires Oxygen and anaerobic respiration that does not requires Oxygen.

It is the process that releases energy by breaking down food molecules in the process of Oxygen.

We have the Glycolysis, Kreb’s Cycle and the Electron Transport Chain.

How will you define Glycolysis?

Very good!

Base on the illustration, How will you describe Glycolysis?

Glycolysis

Precisely!Class, ATP stands for Adenosine Triposphate while NADH stands for Nicotinamide Adenine Dinucleotide where “H” refers to electron.

Now class, what is the function of NADH?Very Good!What are the materials involve in Glycolysis?Precisely!

How about the Kreb’s Cycle? Where can we found the process of Kreb’s Cycle?

Base on the illustration, How will you describe the Kreb’s Cycle?

A Process occurs in cytoplasm, where the glucose breaks down into two Pyruvates.

Glucose breaks down into two pyruvates, (which consist of 3 carbons). The energy released from glucose is trapped in ATP molecules.The process eventually yield a net gain of 2 ATP molecules and also produces 2 NADH.

NADH is an electron carrier molecule that temporarily stores energy.

Glucose, 2 Pyruvates, 2 ATP, 2 NADH

After glycolysis, the next step is the Kreb’s Cycle where it occurs in the Mitochondria.

The Pyruvate moves from the cytoplasm into the mitochondrion and forms Acetyl Co-enzyme A. Acetyl Co-enzyme A enters the Kreb’s Cycle which produces several substances. Several of these are recycled by moving continuously in the cycle.

Glucose

2 Pyruvates+¿

2 ATP+¿

2 NADH

2 Acetyl

CoA

6 CO2

2 ATP

Electron carrier NADH and

What are the materials involve in the process of Kreb’s Cycle?Very Good!

What do you think will happen to other substance like CO2 and energy storing compound of NADH andFADH 2?

Very Good!

Did you know that Kreb’s Cycle was discovered by a scientist named Hans Kreb and he received a Novel Prize for that in 1953?

How will you define the Electron Transport Chain?

Very Good!Where can we find, or in what particular cellular structure we can found the Electron Transport Chain?

Base on the illustration, how will you describe the electron transport chain?

What are the materials needed in electron Transport Chain?That’s right!

Now class, are the information about Aerobic Respiration clear to you?

4. Generalization Class, I have here an Aerobic Respiration chart, What you’re going to do is to place the materials

2 Acetyl Co – Enzyme, 6 CO2, 2 ATP and electron carriers

They move out of the Kreb’s Cycle for the preparation for the next cycle which is the Electron Transport System.

The electrons of NADH and FADH 2 flow through the series of electron transport acceptors.

Electron Transport occurs in Mitochondria.

The flow of electron and H+ results in ATP formation. The last electron acceptor in the chain is Oxygen. The electrons, Hydrogen ions and Oxygen to form water.

NADH, FADH 2, 32 ATP, e-, 2H+, 6H 2 O

32 ATP

ElectronCarriers(NADHFADH 2)

6 Oxygen

2H+ 6 H 2 O

to the proper position where it is belong.The lists of the materials are posted on the board.

Is that clear?I need volunteers to this task.

5. ApplicationI have here a video which can give you an idea about the importance of aerobic respiration.

(The Students will watched the video)

My question is: How aerobic respiration

does affect human life? Why is it important to

release the energy of the food we eat?

oftens begins with

which is broken down during

which is an which produces

which does that is used innot require

which involves

Yes Sir!

6. ValuingExplain the statement:“Aerobic Respiration is an almost universal process – carried out by most animals and plants”.

Since animals and plants are the major organism that can be found in this world, and since that they undergo to the process of aerobic respiration. Therefore, it is a universal process.

IV. EvaluationDirections: Identify the processes or steps involve in aerobic respiration and also the important materials or molecules needed in the process. Use the illustration below.

Processes or Steps of Aerobic RespirationA. _________________ Materials and Molecules involve:B. _________________ a.1 ___________________C. _________________ a.2 ___________________

a.3 ___________________b.1 ___________________b.2 ___________________b.3 ___________________c.1 ___________________c.2 ___________________c.3 ___________________

V. Assignments

Directions: Draw and describe the following processes under Aerobic Respiration.

A. Glycolysis (1 – 5)B. Kreb’s Cycle (6 – 10)C. Electron Transport Chain ( 11 – 15)

Criteria: Content . . . . . . . 50% Art . . . . . . . . . . . 25% Neatness . . . . . . 25%

Kreb’sCycle

Oxidative

phosphoryl

Glycolysis

A B

C

G

ED

ATH

AT AT

F

Prepared by:

___________________Christian Jay D. SalazarStudent Teacher

Checked by:

________________________Mrs. Rosemarie C. Calacasan

Cooperating Teacher