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Titlelesson plan
TagsBiomolecules Nucleic Acids Macromolecules Carbohydrates Biosynthesis
File Size134.9 KB
Total Pages10
Table of Contents
                            Core components
Subject, Content Area or TOPIC: HIGH SCHOOL SCIENCE, BIOLOGY.
Student Population: 32
Learning Objectives (for Cognitive Domain):
The student is expected to:
1) Investigate and explain synthesis of new molecules, describe the roles of DNA, ribonucleic acid (RNA)
2) Identify components of DNA, compare the structures and functions of different types of biomolecules, including carbohydrates, lipids, proteins, and nucleic acids, analyze
3) Evaluate the evidence regarding formation of simple organic molecules and their organization into long complex molecules
Texas Essential Knowledge and Skills (TEKS)
                        
Document Text Contents
Page 3

Learning Objectives (for Cognitive Domain):
The student is expected to:
1) Investigate and explain synthesis of new molecules, describe the roles of DNA, ribonucleic acid (RNA)
2) Identify components of DNA, compare the structures and functions of different types of biomolecules, including

carbohydrates, lipids, proteins, and nucleic acids, analyze
3) Evaluate the evidence regarding formation of simple organic molecules and their organization into long complex molecules

Texas Essential Knowledge and Skills (TEKS)

TEKS B.9 (A). Compare the structures and functions of different types of biomolecules, including carbohydrates, lipids,
proteins, and nucleic acids.

Technology TEKS (if applicable) http://www.tea.state.tx.us/rules/tac/ch126toc.html

English Language Proficiency Standards (ELPS): TLW read, write and speak about the structure and
function of different types of biomolecues, including carbohydrates, lipids, proteins and nucleic acids.

KEY VOCABULARY
Polymer
Chemical Bond
Organic
Carbon compounds
Biomolecules
Macromolecules
Monomer
Polymer
Carbohydrates
Dehydration synthesis
Hydrolysis
Biomolecules
Macromolecules
Monomer
Monosaccharide
Di
Ose
glucose
Saccharide
Polysaccharide
Starch
Glycogen
Cellulose
Roughage
Lipid
Glycerol
Tricylceride
Fatty acid
Saturated fat

Unsaturated fat
Steroids
Nucleic Acid
DNA - deoxyribose
RNA - ribose
Nucleotide
Phosphate
Sugar
Nitrogen base
Hydrogen bond
ATP
ADP
Hydrolysis
Dehydration synthesis Protein
Amino Acid
Peptide bonds
Primary, secondary,
Tertiary, quaternary structure
Denature
Di
Poly Enzymes
Active site
Activation energy
Catalyst
Denature
Product
Substrate
Lock and Key Theory
Induced fit Theory

3

http://www.tea.state.tx.us/rules/tac/ch126toc.html

Page 7

Instructional Input or Procedure(Explore):

Lab 1_ Use Benedict’s solution to test for monosaccharide in foods
This would be done as a teacher demo by showing this video ( https://www.youtube.com/watch?v=J7glsbXAmdU).

Lab 2(a)_ Use iodine indictor to test if a food substance is composed of carbohydrates through following steps:
1. Add 10 cm3 of the liquid food sample to a clean, dry test tube.
2. Add about 5 drops of iodine solution to the test tube Note any color changes. 3.
To prepare a control, perform steps 1 -3 for de-ionized water.

Lab2(b)_Use brown paper to test for lipids (translucent)through the following steps:

1. Cut a piece of the solid food to expose the inside. If the food sample is liquid, apply a small amount to the cotton swab.
2. Rub the solid food piece or the liquid on the cotton swab on the paper bag.
3. Allow the sample to dry for at least three to four minutes
4 Place the paper bag against a light source, such as a lamp. If the bag shows a grease spot causing a translucent
appearance of the paper bag, lipids are present.

Lab3 – Magic Milk explain the steps for the experiments:

1. Pour enough milk into the container to completely cover the bottom and allow it to settle.
2. Add 3 drops of each of the colors of food coloring to the milk. (Widely separated and not in the centre of the dish)
3. Predict what will happen when you touch the tip of a clean q-tip to the centre of the milk. Place the tip of the clean q-tip in
the centre of the milk. Observe what happens. (It's important not to stir the mix, just touch it with the tip of the cotton swab.)
4. Place a drop of liquid dish soap on the tip of the q-tip. Predict what will happen when you touch the tip of a soapy q-tip to
the centre of the milk.
5. Place the soapy end of the q-tip swab in the middle of the milk and hold it there for 10 to 15 seconds.
6. Notice that the food coloring streams away from the point where the soap touched the milk, and the colors in the milk
continue to move even when the q-tip is removed. After a while the motion of the food coloring will stop.
7. Add another drop of soap to the tip to the q-tip and try it again. Notice that the motion of the food coloring resumes.
8. Experiment with placing the soapy q-tip in different places in the milk. Sometimes the food coloring will stream all the way
to the side of the dish and then reappear near the center.
9. Record what you see. What do you think happened?

Show YouTube video https://www.youtube.com/watch?v=pW-bn9zssak

Use paper model, food model, or DNA model to haven students construct a model of DNA.
Play DNA Song while students are working. https://www.youtube.com/watch?v=ckZEds5taX4

Lab 4– Use Burette Solution to test unknown foods for the presence of protein:
1.Add 2 cm3 of the liquid food sample* to a clean, dry test tube
2.Add 2 cm3 of Biuret Reagent. 3.
Observe any color change.

.

Safety: Students will bring hand gloves to the lab.

7

https://www.youtube.com/watch?v=pW-bn9zssak
https://www.youtube.com/watch?v=J7glsbXAmdU

Page 9

Management Issues(optional):
1) How long is the lesson expected to last?
Under what conditions or possible reasons would the timing of instruction need to be modified?

2) Are classroom rules, procedures and consequences already established in this class?
a) If so, list them here. If not, identify general rules, procedures and consequences that will be implemented. And, describe
how the students will be taught/trained/informed of the rules, procedures and consequences.
3) How will the needs of second language learners be addressed?
4) How will instruction be modified during the lesson for special needs students?
5) What technology resources will be used to teach the lesson?

6) How will students be called on to ensure optimum participation of ALL students?

7) How will student attention be gained to begin a different aspect of the lesson and/or if they get off-task?
a. What will be done if distractions occur?
b. What attention getting strategies can be implemented if needed?

Re-tech:
TLW watch the Brain pop video https://www.youtube.com/watch?v=PYH63o10iTE on biomolecules
and summarize their learning by completing the 3_2_1 information below.
1. Write 3 things you already knew from the video?
2. Write 2 things you learned from the video?
3. Write one question you still have about biomolecules?

Enrichment:
Project:
TLW create monomer and polymer analogies.

1.A Polymer ~ B: string of pearls
What: "A polymer is like a string of pearls, with each individual pearl representing one monomer. Polymers typically have
hundreds to thousands of copies of each monomer. In fact, natural rubber is a polymer that has over 100,000 monomers of
isoprene along a single chain."
2 A: Polymer ~ B: a Lego house
What: "A monomer is like a Lego building block, whereas a polymer is like a Lego house .One Lego doesn't build a house, but
by combining them you can put together a house. This is the same for macromolecules like carbohydrates, proteins, and
nucleic acids.").

Create pamphlets about the biological molecules and their relation to health and wellness.

Student Teacher Signature Instructor Signature Date

9

https://www.youtube.com/watch?v=PYH63o10iTE

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