Download Bioenergetics Structures and Functions of Cells

Bioenergetics Structures and Functions of
Cells
by Flourence Octaviano on June 17, 2017
lesson duration of 20 minutes
under Earth and Life Science
generated on June 17, 2017 at 08:42 am
Tags: Earth and Life Science
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K-12 Teacher's Resource Community
Generated: Jun 17,2017 04:42 PM
Bioenergetics Structures and Functions of Cells
( 3 hours and 20 mins )
Written By: Flourence Octaviano on February 14, 2017
Subjects: Earth and Life Science
Tags: Earth and Life Science
Resources
(1) Johnson, G.B. and P.H. Raven, 1996. Biology: Principles and Explanation-Austin, USA: Holt, Rinehart, and
Winstin.
(2) Reece, JB, Urry, LA, Cain ML, Wasseman, SA, Minorsky, PV and RB Jackson, Campbelle Biology . Tenth Edition.
Boston, USA: Pearson Education, Inc.
(3) Starr, C and R Taggart. Biology and the Diversity of Life. Tenth Edition, Australia: Thomson - Brooks/Cole. page
233
Content Standard
The learners demonstrate an understanding of the cell as the basic unit of life, the different cell organelles, and their
functions.
Performance Standard
The learners shall be able to differentiate prokaryotic from eukaryotic cells, enumerate cell structures/organelles and
describe their functions, and identify which structures are unique to plant cells, animal cells, and bacteria.
Learning Competencies
The learners shall be able to explain how cells carry out functions required for life.
Communicating learning objectives 15 mins
Communicating learning objectives
1. Review the previous lesson on the chemical origin of life/first cells
2. Describe the lesson objectives and present the topic outline on the board as follows:
a. The cell membrane b. Parts of a typical prokaryotic cell and plant/animal cell
c. Common structures in plant and animal cells
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d. Structures found only in plant and animal cells
e. The cytoskeleton and extracellular components
Recall characteristics of life 15 mins
Recall characteristics of life
1. Ask students the levels of organization in biology: from the organism down to cells and molecules
2. Ask volunteers to enumerate organelles found in plant cells or animal cells
3. With a show of hands, ask the class what cell structure is commonly found in plant cells
4. Show pictures of a bacterial cell and plant cell as seen in college textbooks. Point out some similar structures
(Sample response: cell wall; ribosome; cell membrane)
Lecture 90 mins
1. Describe using illustrations the organization, structure and function of the following:
a. The cell membrane
i. phospholipids and proteins in membrane
ii. the fluid mosaic model of cell membrane
b. Parts of a typical bacterial cell; cell membrane; cell wall; ribosome; nucleoid; mesosome; pili; fimbriae; flagella;
capsule; cytosol
c. Common structures in plant and animal cell: nucleus (with nucleolus); rough endoplasmic reticulum (rER); smooth
ER; Golgi complex; lysosomes; ribosomes; micro bodies; mitochondria
d. Unique structures in plant and animal cells
i. found in plants only – chloroplast; cell wall; large vacuole
ii. found in animal cells only – centrioles and cilia
e. The cytoskeleton and some related structures
i. microfilaments; intermediate filaments; microtubules
ii. centrioles
iii.cilia and flagella
f. Extracellular components
i. in plants – cell walls; plasmodesma(ta)
ii. in animals – extracellular matrix (ECM); cell junctions – tight junction; desmosome; gap junction
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Drawing Activity 20 mins
Drawing Activity
• Individually or in groups, students may be asked to draw a typical plant or animal cell as seen in college textbooks.
Drawings should clearly reflect the fine structure of the organelles as seen in the electron microscope.
• Each structure in #1 above should be labeled properly.
• With a red ball pen, show the flow of membranes from the outer nuclear envelope to the rough and smooth ER to the
Golgi complex and to other micro bodies.
• Ask students what will happen if any organelle is damaged or become defective.
Quiz 10 mins
Quiz
A simple analysis of “odd one out”. Identify the structure which does not belong to the group.
1. capsule; flagella; pili; nucleoid; desmosome;
2. cell membrane; DNA; ribosome; peroxisome; cytosol
3. cell wall; plasmodesma; huge vacuole; chloroplast; ribosome
4. lysosomes; nucleus; mitochondria; chloroplast
5. cilia; flagella; centrioles; ER; microtubules
Match: Choose an answer from the choices before each numbered item
A. ribosomes B. pili C. peroxisomes D. chromoplasts E. gap junctions
6. contain oxidases and catalases
7. provide cytoplasmic channels from one cell to another
8. sites of protein synthesis
9. plastids containing pigments other than chlorophyll
10.allow bacteria to exchange DNA during conjugation
Assignment 50 mins
1. As quiz or take home assignment, require the students to make a table showing which structures are unique to
bacterial cells and plant cells. In another table, indicate which structures/organelles are common between plant and
animal cells and opposite each item, write the function for each particular structure/organelle
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2. In class, ask the students (by group) to construct a three-dimensional model of a plant or animal cell. Use materials
that can be recycled and are biodegradable.
Download Teaching Guide Book 0 mins
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