Show:
Nucleotides
Structure
Bonds
Replication
Types of Nucleic Acids
100
What are the two types of Nucleotides?
Purines and Pyramidines
100
What is the primary structure of nucleic acids?
The order, type, and number of nucleotides?
100
What kind of bonds hold together base pairs?
Hydrogen Bonds
100
What are the three enzymes involved in DNA replication?
DNA Helicase, DNA Ligase, DNA Polymerase.
100
What are the two types of Nucleic Acids?
DNA and RNA
200
What are the two sugars in Nucleotide bases?
Ribose and 2-deoxyribose
200
What is a chromosome?
DNA strands wrapped around a protein molecule for storage?
200
What kind of bond forms between nucleotides?
Phosphoester bonds.
200
What enzyme unwinds DNA during replication?
DNA Helicase
200
What is the chief difference in the structure of DNA and RNA?
DNA contains 2-deoxyribose, and RNA contains ribose.
300
A nucleic acid is 17% comprised of T, what are the % comps of the other bases?
17% A 33% C and G
300
Why are the weak bonds between base pairs strong enough to hold the strands together?
Because there are a lot of bonds.
300
Which ends bond each other in nucleotide chains?
5` to 3`
300
Does DNA replicate from end to end?
No.
300
In RNA what is T analogous to?
Uracil
400
What are the two components of a nucleotide that are not part of the base-pair bonds?
Phosphate Group Sugar
400
What direction does a complementary strand run in?`
The opposite direction of the strand it compliments.
400
How does the phosphodiester linkage work?
There is a phosphoester group on the 5` end of one strand, and another on the 3` end of the complementary strand.
400
How many DNA strands are there after DNA replication?
4.
400
What are the functions of RNA?
RNA functions primarily in synthesis of proteins.
500
What bases are pyrimidines and which are purines?
A and G are Purines T, C, and U are Pyrimidines
500
What are the three parts of a nucleotide?
Phosphate group, Sugar, and the base
500
Why does A bond to T more readily than to C?
Because it is capable of forming more bonds.
500
Why is one strand of DNA continuously grown, while the other grows in segments?
Because DNA polymerase only functions in one direction, so it must wait until a portion of DNA is unwound in order to work backwards.
500
What are the functions of DNA?
DNA's primary function is the storage and transfer of genetic information.