AAC Wednesday (10/15) - Intro to DNA 2025

Last updated about 3 hours ago

28 Nsɛmmisa

Section 1: Warm Up

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Section 2: DNA Stations Activity

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Exit Ticket

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Laabri

AAC Wednesday (10/15) - Intro to DNA 2025

Last updated about 3 hours ago

28 Nsɛmmisa

Section 1: Warm Up

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1

What kind of biomolecule is DNA?

Nucleic Acid

Lipid

Protein

Carbohydrate

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Which of the following have DNA?

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What does DNA do?

Provides instructions/contains genetic code for making proteins/traits

Provides our bodies with quick energy

Provides our bodies with energy storage and insulation

Builds our physical traits

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Which of the following have DNA?

Plant Cells (Eukaryotes)

Viruses

Bacteria Cells (Prokaryotes)

Animal Cells (Eukaryotes)

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When is DNA copied during the cell cycle?

DNA replication occurs during in eukaryotes.

Section 2: DNA Stations Activity

STATION 1: COMPARING DNA

The drawings below show a very small section of the DNA double helix from three very different organisms: a plant, a mammal, and a bacterium.

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Each strand of DNA shown contains five nucleotides. Each nucleotide has:

S = sugar molecule called deoxyribose P = phosphate group and one of the four bases: A = adenine, C = cytosine, G = guanine, or T = thymine

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In the backbone of each strand in the DNA double helix molecule, the sugar of one nucleotide is bonded to the of the nucleotides in each strand of DNA extend toward each other in the center of the DNA double helix molecule.

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THE SUPER MOST IMPORTANT BASE PAIRING RULE!!!!

A in one strand always pairs with in the other strand.

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In the table below, select the statements that apply to each organism.

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If DNA has the same structure in all living organisms, what determines different genes? Based on your table above, which characteristic determines the difference in genes between plants, mammals, and bacteria?

STATION 2: NUCLEOTIDE STRUCTURE PUZZLE

Directions:

1.) Create a strand of DNA by attaching nitrogen bases (the letters on colored paper) to each side of the sugar phosphate backbone (on the white paper).

Note: Pay attention to the lines on each nitrogen base to determine the correct pairing of nitrogen bases! The lines should match up!!!!

2.) Call your teacher over when you are finished.

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STATION 3: BEAR TRAITS

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Which characteristics are different between the two bears?

Both Bears Are Identical

Coat Color

Eye Size

Nose Shape

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STATION 4: DNA REPLICATION PROCESS

During DNA replication in S phase, the two sides of the DNA helix are separated, then each side is used to provide instructions for making a new complementary** (matching) strand.**

The nucleotides in the new strand are added one at a time. Each new nucleotide is matched to a nucleotide in the old strand using the base-pairing rules.

DNA replication results in two new DNA molecules that are identical to the original DNA molecule. Thus, each of the new DNA molecules has the same genetic information as the original DNA molecule.

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Exit Ticket

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When does DNA replication occur?

During metaphase of the cell cycle.

During the S phase of Interphase

During cytokinesis forming daughter cells.

During G2 of interphase in the cell cycle.

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In the structure of DNA, the super mega most important base pair rule is that A always binds with .

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Since all living things have DNA, and all DNA is made of A, T, C, and G, what is responsible for the changes in traits and genes in the DNA?

Order of the sugar-phosphate backbone

Sequence of nucleotide bases

Length of the DNA strand

Number of nucleotide bases

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What is the complementary (matching) strand?
(What is the other side?)
A C C T T G

A C C T T G

T G G A A C

C G G T T A

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Label the structures of a nucleotide:

Mmuae Afoforo a Wobɛpaw:

Sugar

Nitrogen Base

Phosphate

What kind of biomolecule is DNA?

Nucleic Acid

Lipid

Protein

Carbohydrate

Which of the following have DNA?

What does DNA do?

Provides instructions/contains genetic code for making proteins/traits

Provides our bodies with quick energy

Provides our bodies with energy storage and insulation

Builds our physical traits

Which of the following have DNA?

Plant Cells (Eukaryotes)

Viruses

Bacteria Cells (Prokaryotes)

Animal Cells (Eukaryotes)

When is DNA copied during the cell cycle?

DNA replication occurs during in eukaryotes.

STATION 1: COMPARING DNA

The drawings below show a very small section of the DNA double helix from three very different organisms: a plant, a mammal, and a bacterium.

Each strand of DNA shown contains five nucleotides. Each nucleotide has:

S = sugar molecule called deoxyribose P = phosphate group and one of the four bases: A = adenine, C = cytosine, G = guanine, or T = thymine

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1

In the backbone of each strand in the DNA double helix molecule, the sugar of one nucleotide is bonded to the of the nucleotides in each strand of DNA extend toward each other in the center of the DNA double helix molecule.

Ɛhia

1

THE SUPER MOST IMPORTANT BASE PAIRING RULE!!!!

A in one strand always pairs with in the other strand.

In the table below, select the statements that apply to each organism.

If DNA has the same structure in all living organisms, what determines different genes? Based on your table above, which characteristic determines the difference in genes between plants, mammals, and bacteria?

STATION 2: NUCLEOTIDE STRUCTURE PUZZLE

Directions:

1.) Create a strand of DNA by attaching nitrogen bases (the letters on colored paper) to each side of the sugar phosphate backbone (on the white paper).

Note: Pay attention to the lines on each nitrogen base to determine the correct pairing of nitrogen bases! The lines should match up!!!!

2.) Call your teacher over when you are finished.

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Based on your model, what do you notice about how the nitrogen bases pair together?

Draggable item		Corresponding Item
G		T
A		C

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What things were you able to manipulate (change) as you built the DNA strand?

The number of sugar phosphate backbones.

The sequence (order) of nitrogen bases.

The ways the nitrogen bases paired up.

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How many sugar phosphate backbones are present in your strand of DNA?

1

2

6

12

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Based on your model, what always goes on the inside of DNA strand?

Nitrogen bases (A, T, C, G)

Deoxyribose Sugar (pentagon)

Phosphate group (circle)

Nucleotides

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Based on your model, what makes up the outside of DNA strand?

Nitrogen bases (A, T, C, G)

Nucleotides

Sugar-Phosphate Backbone (pentagons and circles)

STATION 3: BEAR TRAITS

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Which characteristics are different between the two bears?

Both Bears Are Identical

Coat Color

Eye Size

Nose Shape

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What determines the differences in these traits?

The size of the nitrogen bases (letters)

The shape of the nitrogen bases (letters)

The order of the nitrogen bases (letters)

The quality of the nitrogen bases (letters)

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Below is a diagram of two twin girls born from the same mother and the same father. In your own words why are these twins different?
Think about the letters in the bears. (Write in full sentences.)
STEM: The twins are different because........

When does DNA replication occur?

During metaphase of the cell cycle.

During the S phase of Interphase

During cytokinesis forming daughter cells.

During G2 of interphase in the cell cycle.

In the structure of DNA, the super mega most important base pair rule is that A always binds with .

Since all living things have DNA, and all DNA is made of A, T, C, and G, what is responsible for the changes in traits and genes in the DNA?

Order of the sugar-phosphate backbone

Sequence of nucleotide bases

Length of the DNA strand

Number of nucleotide bases

What is the complementary (matching) strand?
(What is the other side?)
A C C T T G

A C C T T G

T G G A A C

C G G T T A

Label the structures of a nucleotide:

Mmuae Afoforo a Wobɛpaw:

Sugar

Nitrogen Base

Phosphate

Based on your model, what do you notice about how the nitrogen bases pair together?

Draggable item		Corresponding Item
G		T
A		C

What things were you able to manipulate (change) as you built the DNA strand?

The number of sugar phosphate backbones.

The sequence (order) of nitrogen bases.

The ways the nitrogen bases paired up.

How many sugar phosphate backbones are present in your strand of DNA?

1

2

6

12

Based on your model, what always goes on the inside of DNA strand?

Nitrogen bases (A, T, C, G)

Deoxyribose Sugar (pentagon)

Phosphate group (circle)

Nucleotides

Based on your model, what makes up the outside of DNA strand?

Nitrogen bases (A, T, C, G)

Nucleotides

Sugar-Phosphate Backbone (pentagons and circles)

What determines the differences in these traits?

The size of the nitrogen bases (letters)

The shape of the nitrogen bases (letters)

The order of the nitrogen bases (letters)

The quality of the nitrogen bases (letters)

Below is a diagram of two twin girls born from the same mother and the same father. In your own words why are these twins different?
Think about the letters in the bears. (Write in full sentences.)
STEM: The twins are different because........

Compare the original DNA strand to the strand that you created. What do you notice?

They have different bases in a different order.

They have the same bases in the same order.

They have the same bases in a different order.

Compare the two DNA strands you created to each other. What do you notice?

They have the same bases in a different order.

They have the same bases in the same order.

They have different bases in a different order.

At the end of DNA replication, we produce...

two different DNA strands

two identical DNA strands

The diagram below shows an enzyme helicase during DNA replication.
What is the function of helicase?

Connects nitrogen bases (letters) to other nitrogen bases

Changes the order of the nitrogen bases (letters) in the DNA strand

Adds new nitrogen bases (letters) to the DNA strand

Breaks the hydrogen bonds (connections) between nitrogen bases (letters)

The diagram below shows an enzyme DNA polymerase during DNA replication.
What is the function of DNA polymerase?

Connects nitrogen bases (letters) to other nitrogen bases

Changes the order of the nitrogen bases (letters) in the DNA strand

Adds new nitrogen bases (letters) to the DNA strand

Breaks the hydrogen bonds (connections) between nitrogen bases (letters)

	Plant	Mammal	Bacteria
Has backbone made of sugar and phosphate.
Has DNA bases made of A, T, C, and G.
Has the same order of bases.
Follows the base-pairing rule (see #8)

	Plant	Mammal	Bacteria
Has backbone made of sugar and phosphate.
Has DNA bases made of A, T, C, and G.
Has the same order of bases.
Follows the base-pairing rule (see #8)

AAC Wednesday (10/15) - Intro to DNA 2025

AAC Wednesday (10/15) - Intro to DNA 2025

What kind of biomolecule is DNA?

Which of the following have DNA?

What does DNA do?

Which of the following have DNA?

STATION 1: COMPARING DNA

The drawings below show a very small section of the DNA double helix from three very different organisms: a plant, a mammal, and a bacterium.

Each strand of DNA shown contains five nucleotides. Each nucleotide has:

S = sugar molecule called deoxyribose P = phosphate group and one of the four bases: A = adenine, C = cytosine, G = guanine, or T = thymine

THE SUPER MOST IMPORTANT BASE PAIRING RULE!!!!

In the table below, select the statements that apply to each organism.

If DNA has the same structure in all living organisms, what determines different genes? Based on your table above, which characteristic determines the difference in genes between plants, mammals, and bacteria?

STATION 2: NUCLEOTIDE STRUCTURE PUZZLE

1.) Create a strand of DNA by attaching nitrogen bases (the letters on colored paper) to each side of the sugar phosphate backbone (on the white paper).

Note: Pay attention to the lines on each nitrogen base to determine the correct pairing of nitrogen bases! The lines should match up!!!!

2.) Call your teacher over when you are finished.

STATION 3: BEAR TRAITS

Which characteristics are different between the two bears?

STATION 4: DNA REPLICATION PROCESS

During DNA replication in S phase, the two sides of the DNA helix are separated, then each side is used to provide instructions for making a new complementary (matching) strand.

The nucleotides in the new strand are added one at a time. Each new nucleotide is matched to a nucleotide in the old strand using the base-pairing rules.

DNA replication results in two new DNA molecules that are identical to the original DNA molecule. Thus, each of the new DNA molecules has the same genetic information as the original DNA molecule.

When does DNA replication occur?

Since all living things have DNA, and all DNA is made of A, T, C, and G, what is responsible for the changes in traits and genes in the DNA?

What is the complementary (matching) strand?(What is the other side?)A C C T T G

A C C T T G

What kind of biomolecule is DNA?

Which of the following have DNA?

What does DNA do?

Which of the following have DNA?

STATION 1: COMPARING DNA

The drawings below show a very small section of the DNA double helix from three very different organisms: a plant, a mammal, and a bacterium.

Each strand of DNA shown contains five nucleotides. Each nucleotide has:

S = sugar molecule called deoxyribose P = phosphate group and one of the four bases: A = adenine, C = cytosine, G = guanine, or T = thymine

THE SUPER MOST IMPORTANT BASE PAIRING RULE!!!!

In the table below, select the statements that apply to each organism.

If DNA has the same structure in all living organisms, what determines different genes? Based on your table above, which characteristic determines the difference in genes between plants, mammals, and bacteria?

STATION 2: NUCLEOTIDE STRUCTURE PUZZLE

1.) Create a strand of DNA by attaching nitrogen bases (the letters on colored paper) to each side of the sugar phosphate backbone (on the white paper).

Note: Pay attention to the lines on each nitrogen base to determine the correct pairing of nitrogen bases! The lines should match up!!!!

2.) Call your teacher over when you are finished.

Based on your model, what do you notice about how the nitrogen bases pair together?

What things were you able to manipulate (change) as you built the DNA strand?

How many sugar phosphate backbones are present in your strand of DNA?

Based on your model, what always goes on the inside of DNA strand?

Based on your model, what makes up the outside of DNA strand?

STATION 3: BEAR TRAITS

Which characteristics are different between the two bears?

What determines the differences in these traits?

Below is a diagram of two twin girls born from the same mother and the same father. In your own words why are these twins different? Think about the letters in the bears. (Write in full sentences.)STEM: The twins are different because........

STATION 4: DNA REPLICATION PROCESS

During DNA replication in S phase, the two sides of the DNA helix are separated, then each side is used to provide instructions for making a new complementary (matching) strand.

The nucleotides in the new strand are added one at a time. Each new nucleotide is matched to a nucleotide in the old strand using the base-pairing rules.

DNA replication results in two new DNA molecules that are identical to the original DNA molecule. Thus, each of the new DNA molecules has the same genetic information as the original DNA molecule.

Compare the original DNA strand to the strand that you created. What do you notice?

Compare the two DNA strands you created to each other. What do you notice?

At the end of DNA replication, we produce...

The diagram below shows an enzyme helicase during DNA replication.What is the function of helicase?

The diagram below shows an enzyme DNA polymerase during DNA replication. What is the function of DNA polymerase?

When does DNA replication occur?

Since all living things have DNA, and all DNA is made of A, T, C, and G, what is responsible for the changes in traits and genes in the DNA?

What is the complementary (matching) strand?(What is the other side?)A C C T T G

A C C T T G

Based on your model, what do you notice about how the nitrogen bases pair together?

What things were you able to manipulate (change) as you built the DNA strand?

How many sugar phosphate backbones are present in your strand of DNA?

Based on your model, what always goes on the inside of DNA strand?

Based on your model, what makes up the outside of DNA strand?

What determines the differences in these traits?

Below is a diagram of two twin girls born from the same mother and the same father. In your own words why are these twins different? Think about the letters in the bears. (Write in full sentences.)STEM: The twins are different because........

Compare the original DNA strand to the strand that you created. What do you notice?

Compare the two DNA strands you created to each other. What do you notice?

At the end of DNA replication, we produce...

The diagram below shows an enzyme helicase during DNA replication.What is the function of helicase?

The diagram below shows an enzyme DNA polymerase during DNA replication. What is the function of DNA polymerase?

During DNA replication in S phase, the two sides of the DNA helix are separated, then each side is used to provide instructions for making a new complementary** (matching) strand.**

What is the complementary (matching) strand?
(What is the other side?)
A C C T T G

Below is a diagram of two twin girls born from the same mother and the same father. In your own words why are these twins different?
Think about the letters in the bears. (Write in full sentences.)
STEM: The twins are different because........

During DNA replication in S phase, the two sides of the DNA helix are separated, then each side is used to provide instructions for making a new complementary** (matching) strand.**

The diagram below shows an enzyme helicase during DNA replication.
What is the function of helicase?

The diagram below shows an enzyme DNA polymerase during DNA replication.
What is the function of DNA polymerase?

What is the complementary (matching) strand?
(What is the other side?)
A C C T T G

Below is a diagram of two twin girls born from the same mother and the same father. In your own words why are these twins different?
Think about the letters in the bears. (Write in full sentences.)
STEM: The twins are different because........

The diagram below shows an enzyme helicase during DNA replication.
What is the function of helicase?

The diagram below shows an enzyme DNA polymerase during DNA replication.
What is the function of DNA polymerase?