the drawing below shows half of a dna molecule. fill in the approximate letters for the other half. explain why you drew your sketch the way you did. key: a = adenine, c = cytosine, g = guanine, t = thymine. apply the big idea 15. complete this table to show how the structure of the dna molecule allows it to perform each essential function. function structure of the molecule store information copy information transmit information lesson 12.2 • workbook a • copyright © by pearson education, inc., or its affiliates. all rights reserved. 186

Question

Accepted Answer

# Answer:
**Part 1: Completing the DNA strand**
The completed DNA strand (filling in the blanks from top - to - bottom) is: C, T, C, C, G, G, A, T, G.

**Part 2: Completing the table**
| Function | Structure of the Molecule |
|--|--|
| Store information | The sequence of nitrogenous bases (A, T, C, G) in the DNA molecule can be arranged in different combinations to store genetic information. |
| Copy information | The two - strand structure of DNA allows for semi - conservative replication. The hydrogen bonds between the complementary base pairs (A - T and C - G) can be broken, and each strand can serve as a template for the synthesis of a new complementary strand. |
| Transmit information | The linear sequence of bases in DNA is transcribed into mRNA, which then carries the genetic information from the nucleus to the ribosomes for protein synthesis. The genetic code is based on the triplet sequence of bases in DNA (and mRNA), which determines the sequence of amino acids in a protein. |

# Explanation:
## Step 1: Completing the DNA strand
In DNA, adenine (A) pairs with thymine (T) and cytosine (C) pairs with guanine (G). So, for each base on one strand, we add its complementary base to the other strand.
## Step 2: Filling the 'Store information' row
The unique sequence of the four nitrogenous bases (A, T, C, G) in DNA is like a code. Different sequences can represent different genetic instructions, thus storing information.
## Step 3: Filling the 'Copy information' row
DNA has a double - helix structure. During replication, the hydrogen bonds between the base pairs are broken, and each single strand acts as a template. Free nucleotides in the cell bind to the exposed bases on the template strands according to the base - pairing rules (A - T, C - G) to form new complementary strands.
## Step 4: Filling the 'Transmit information' row
The process of transcription copies the information in DNA into mRNA. The mRNA then travels out of the nucleus to the ribosomes. The sequence of bases in mRNA is read in groups of three (codons), and each codon corresponds to a specific amino acid. This way, the genetic information in DNA is transmitted to proteins.

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Step 1: Completing the DNA strand

Step 2: Filling the 'Store information' row

Step 3: Filling the 'Copy information' row

Step 4: Filling the 'Transmit information' row

Answer:

Function	Structure of the Molecule
Copy information	The two - strand structure of DNA allows for semi - conservative replication. The hydrogen bonds between the complementary base pairs (A - T and C - G) can be broken, and each strand can serve as a template for the synthesis of a new complementary strand.
Transmit information	The linear sequence of bases in DNA is transcribed into mRNA, which then carries the genetic information from the nucleus to the ribosomes for protein synthesis. The genetic code is based on the triplet sequence of bases in DNA (and mRNA), which determines the sequence of amino acids in a protein.