Copy of 1.) Model - DNA Structure and Replication (5/28/2026)

Last updated 20 days ago

18 questions

Note from the author:

Instructions

Untitled Section

Exit Ticket - Self Reflection

Required

Copy of 1.) Model - DNA Structure and Replication (5/28/2026)

Last updated 20 days ago

18 questions

Note from the author:

Learning Goals (I can...):
Describe the three components of a nucleotide.
Identify the four nitrogenous bases in DNA.
Describe the relationship of Chargaff's rules with complementary base pairing.
Provide a basic description of DNA replication.

Instructions

Learning Goals (I can...):
Describe the three components of a nucleotide.
Identify the four nitrogenous bases in DNA.
Describe the relationship of Chargaff's rules with complementary base pairing.
Provide a basic description of DNA replication.

Untitled Section

Reading Review:
What is the genetic material in the cell?
How did the reading describe the shape of DNA?
What are the four nitrogenous bases of DNA?
What does Chargaff's rules state?

The nucleotide contains a sugar (sugars end in "-ose"). What is it called? _______ 

Nitrogen is a component of one of the parts of a nucleotide; that part is... _______ 

Following the same ideas of question 5, what parts of the nucleotides make up the sides (backbone) of the “ladder”?
_______ 
_______ 

Identify the nitrogen base...

Just below #8 _______ 

The base that is the answer to above is bonded to which other nitrogen base? _______ 

Identify the nitrogen base just below...

#9 _______ 

The base that is the answer to above is bonded to which other nitrogen base?_______ 

Let’s restate the base-pairing rules using only abbreviations. 
Fill in the blanks with the abbreviation of the base that each nitrogenous base will pair with.
A pairs with - _______ 
T pairs with - _______ 
G pairs with - _______ 
C pairs with - _______ 

Erwin Chargaff (1905–2002), an Austrian-American biochemist, studied the ratio of nucleotide bases in the DNA of various organisms. His findings, along with those of Rosalind Franklin and Maurice Wilkins, helped Watson and Crick formulate the complementary base-pairing rule while they raced to uncover the structure of DNA.

The complementary base-pairing rule states that adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C) across the two strands of DNA.

Erwin Chargaff (1905–2002), an Austrian-American biochemist, studied the ratio of nucleotide bases in the DNA of various organisms. His findings, along with those of Rosalind Franklin and Maurice Wilkins, helped Watson and Crick formulate the complementary base-pairing rule while they raced to uncover the structure of DNA.

The complementary base-pairing rule states that adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C) across the two strands of DNA.

Read This!

Erwin Chargaff (1905–2002), an Austrian-American biochemist, investigated the ratio of nucleotide bases found in the DNA from a variety of organisms. From his research, as well as research by Rosalind Franklin and Maurice Wilkins, Watson and Crick developed the complementary base-pair rule during their race to discover the structure of DNA.

The complementary base-pair rule states that adenine and thymine form pairs across two strands, and guanine and cytosine form pairs across two strands.

Read This!

Erwin Chargaff (1905–2002), an Austrian-American biochemist, investigated the ratio of nucleotide bases found in the DNA from a variety of organisms. From his research, as well as research by Rosalind Franklin and Maurice Wilkins, Watson and Crick developed the complementary base-pair rule during their race to discover the structure of DNA.

The complementary base-pair rule states that adenine and thymine form pairs across two strands, and guanine and cytosine form pairs across two strands.

Read This!
Erwin Chargaff (1905–2002), an Austrian-American biochemist, investigated the ratio of nucleotide bases found in the DNA from a variety of organisms. From his research, as well as research by Rosalind Franklin and Maurice Wilkins, Watson and Crick developed the complementary base-pair rule during their race to discover the structure of DNA.

The complementary base-pair rule states that adenine and thymine form pairs across two strands, and guanine and cytosine form pairs across two strands.

Exit Ticket - Self Reflection

Required

Provide a list of one to two concepts/ideas that you learned or were introduced to in this activity.

Required

Copy of 1.) Model - DNA Structure and Replication (5/28/2026)

Copy of 1.) Model - DNA Structure and Replication (5/28/2026)

Provide a list of one to two concepts/ideas that you learned or were introduced to in this activity.

The ladder model of DNA is a simplified version of the actual structure and shape of a DNA molecule. In reality, DNA strands form a double helix.

Refer to the Helix Model of DNA in Model 1 and describe its shape.

Using model 2, determine what DNA helicase does in the replication of DNA?

What rule is used to govern the following:
The attachment of free nucleotides to the exposed bases of the DNA.
The pairing of nucleotides or bases.

Provide a list of one to two concepts/ideas that you learned or were introduced to in this activity.

After having completed this activity, my confidence regarding this concept has:

Use Model 2 to rearrange the steps below to accurately describe the process of DNA replication in a cell.

Using model 2, determine what DNA helicase does in the replication of DNA?

What rule is used to govern the following:
The attachment of free nucleotides to the exposed bases of the DNA.
The pairing of nucleotides or bases.

Copy of 1.) Model - DNA Structure and Replication (5/28/2026)

Copy of 1.) Model - DNA Structure and Replication (5/28/2026)

Provide a list of one to two concepts/ideas that you learned or were introduced to in this activity.

The ladder model of DNA is a simplified version of the actual structure and shape of a DNA molecule. In reality, DNA strands form a double helix.Refer to the Helix Model of DNA in Model 1 and describe its shape.

Using model 2, determine what DNA helicase does in the replication of DNA?

What rule is used to govern the following:The attachment of free nucleotides to the exposed bases of the DNA.The pairing of nucleotides or bases.

Provide a list of one to two concepts/ideas that you learned or were introduced to in this activity.

After having completed this activity, my confidence regarding this concept has:

Use Model 2 to rearrange the steps below to accurately describe the process of DNA replication in a cell.

Using model 2, determine what DNA helicase does in the replication of DNA?

What rule is used to govern the following:The attachment of free nucleotides to the exposed bases of the DNA.The pairing of nucleotides or bases.

The ladder model of DNA is a simplified version of the actual structure and shape of a DNA molecule. In reality, DNA strands form a double helix.

Refer to the Helix Model of DNA in Model 1 and describe its shape.

What rule is used to govern the following:
The attachment of free nucleotides to the exposed bases of the DNA.
The pairing of nucleotides or bases.

What rule is used to govern the following:
The attachment of free nucleotides to the exposed bases of the DNA.
The pairing of nucleotides or bases.