a. i - VCE - SSCE Chemistry - Question 6 - 2011 - Paper 1
Question 6
a. i. The letters GATAC represent a part of the base sequence in one strand of DNA.
In the boxes provided write the base sequence of the complementary strand of DNA.... show full transcript
Worked Solution & Example Answer:a. i - VCE - SSCE Chemistry - Question 6 - 2011 - Paper 1
Step 1
i. Write the base sequence of the complementary strand
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The base sequence of the complementary strand of DNA can be determined based on base pairing rules:
G pairs with C
A pairs with T
Thus, for the sequence GATAC, the complementary strand is:
C T A T G
Step 2
ii. Determine the number of hydrogen bonds
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
In DNA, the number of hydrogen bonds between base pairs varies:
G-C pairs have 3 hydrogen bonds.
A-T pairs have 2 hydrogen bonds.
In the provided sequence (GATAC), we have:
1 G-C pair (3 hydrogen bonds)
2 A-T pairs (2 hydrogen bonds each)
Calculating the total:
Total = 3 (for G-C) + 2 + 2 (for A-T) = 7 hydrogen bonds.
Step 3
b. Name the reactants
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The reactants that combine in condensation reactions to form the nucleotide involve the following:
