Science - Lesson #3: DNA Structure and Replication

Lesson #3:

DNA Structure and Replication

Learning Intention:

Students will be able to comprehend how DNA replicates and then code for the complimentary strand.

Success Criteria:

I am successful when I can...

1. Explain the composition and structure of DNA

2. Outline how DNA replicates.

3. Describe why DNA replication is important.

Agenda:

Part 1: Warm-Up

Part 2: Mock Regents Sign-Up

Part 3: Article

Part 4: Video

Part 5: Practice

Part 6: Exit Ticket

Reminders:

Tutoring Tuesday from 3-4 pm.

Quiz moved to Tuesday April 1st. I will post a vocab review sheet tomorrow.

Part 1:

Warm-Up

(5 min)

Part 2:

Mock Regents sign-Up

(2 min)

Part 3:

Search and Unseen:

DNA Structure

(10 min)

Structure and Information in DNA:

Search

Describe how complementary base pairing contributes to the structure of DNA.

Unseen

Explain why the order of nucleotides in a DNA sequence is important for determining the traits of an organism.

Part 4:

DNA Structure Take-Away

DNA is made up of pieces called Nucleotides. Nucleotides have three parts.

1) Phosphate

2) Sugar

3) Nitrogen Base - Either A-T-G-C

DNA Structure:

In DNA, the code letters are A, T, G, and C, which stand for the chemicals adenine, thymine, guanine, and cytosine.

In base pairing:

Adenine always pairs with Thymine

And

Guanine always pairs with Cytosine.

_________________________________________

Percentage of A = Percentage of T

Percentage of G = Percentage of C

Example: If we have 32% of Adenine then we will have 32% of Thymine. That means we will have 18% of Guanine and 18% of Cytosine.

Part 4:

DNA Replication

(5 min)

Video

Part 5:

ChatGPT DNA Replication Challenge

(3 min)

Part 6: Exit Ticket

Click Here for Exit Ticket