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DNA Structure and Replication
The structure and replication of DNA
33
Biology
Undergraduate 1
09/28/2010

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Cards

Term
Purine
Definition
Adenine and Guanine
Term
Pyrimidine
Definition
Cytosine, Thymine and Uracil
Term
Deoxyribose
Definition
Sugar in DNA
Term
DNA
Definition
Nucleic acid that contains genetic instructions for the biologic development of an organism
Term
What makes up the backbone of DNA?
Definition
Sugar and Phosphate
Term
Adenine and Thymine are _______ bonded
Definition
double
Term
Cytosine and Guanine are _________ bonded
Definition
triple
Term
What are the four DNA bases?
Definition
Adenine, Thymine, Cytosine, and Guanine
Term

What are the four RNA bases?

 

Definition

Adenine, Uracil, Cytosine, and Guanine

 

Term

Ribose

 

Definition
Sugar in RNA
Term
Hydrogen bonds are based on?
Definition
positive and negative attraction
Term
What holds the strands together?
Definition
Hydrogen bonds
Term

DNA Replication is also known as?

 

Definition
Duplication
Term

What does replication start with?

 

Definition
The separation of the DNA strands
Term

To replicate, a DNA molecule must:

 

Definition
Untwist, copy, and retwist
Term
If a nucleotide is mispaired,
Definition
DNA has a proofreading enzyme and a repair enzyme
Term
Genotype
Definition
Genetic makeup
Term
Phenotype
Definition
Physical makeup
Term
A phenotype is the:
Definition
manifestation of the gene
Term
Gene
Definition

Hereditary unit of information

 

Term
A gene
Definition
specifies how to build proteins
Term
Transcription occurs in the
Definition
nucleus
Term
Translation occurs in the
Definition
cytoplasm
Term
Transcription
Definition
Produces genetic messages to RNA
Term
What happens in transcription with the RNA?
Definition
Initiation, Elongation, and Termination
Term

mRNA

 

Definition
carries the genetic message out of the nucleus
Term
Translation
Definition
Ribosome attatches to mRNA and translates the message into a functional polypeptide. (tRNA)
Term
Codons
Definition
Triplets of bases
Term
What do codons specify?
Definition
Which amino acid is to be built
Term
Mutations are caused by?
Definition
Error in DNA or a Mutagen
Term
Mutagens
Definition
anything capable of causing genetic changes
Term
Hemoglobin
Definition
Oxygen carrying component of the blood
Term
What are the three types of mutations?
Definition
Substitution, Inserting and Deleting
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