CHEM210 / CHEM 210 Module 6 (Latest Update 2026 / 2027) Biochemistry | Questions & Answers | Grade A | 100% Correct - Portage Learning

CHEM210 / CHEM 210 Module 6
(Latest Update )
Biochemistry | Questions & Answers
| Grade A | 100% Correct - Portage
Learning

Nucleic acids




Question:
What is an oligonucleotide
Answer:
A short chain of nucleotides-up to 50




Question:
How are the complementary strands of DNA held together
Answer:
With hydrogen bonds

,Question:
If one strand goes in 5'-3' what direction does the other strand go in?
Answer:
3'-5'




Question:
How many bonds between A and T and how many between C and G
Answer:
Between A and T is 2 hydrogen bonds
between C and G js 3 hydrogen bonds




Question:
Who's research did Watson and crick use to display their DNA structure
Answer:
Rowland Franklin and chargaff

,Question:
What were Edwin chargaffs contributions?
Answer:
1. DNA composition is different in different organisms
2. DNA form different tissues within the same organism is the same
3. the amount of A is the same equimolar amount of T and C=G




Question:
What is the most common secondary structure of DNA
Answer:
The beta form containing minor and major groove




Question:
What is the secondary structure/shape of a DNA?
Answer:
Helix

, Question:
Besides for the hydrogen bonds between bases, where else is hydrogen bonds
Answer:
On all the N and Hs on the bases all around




Question:
What are the other forms of DNA?
Answer:
The A form- this has less distinct minor and major grooves. This form is made
when there is a lack of water
the Z form- is a left twist
these forms just differ in amount of bases per turn




Question:
What is a set of nucleotides that encodes for a protein?
Answer:
A gene