DNA Structure
DNA Replication
Vocabulary
Nucleotides
Misc.
100
molecules of dna are composed of long chains of monomers called-
Nucleotides
100
At what stage does DNA replication occur in a cell?
DNA replication occurs during the synthesis (S phase) phase of interphase in the cell cycle
100
What is Meiosis?
A type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell
100
What are the pyrimidine bases?
cytosine and thymine
100
What scientist did Watson and Crick base their findings on the structure of DNA on?
Rosalind Franklin
200
 Two scientists are given credit for discovering the structure  of DNA.  What is the name of those two scientists?
James Watson and Francis Crick
200
Where in the cell does DNA replication occur?
The cell nucleus
200
What is a codon?
A set of three nitrogenous bases that represent an amino acid
200
What are the purine bases?
guanine and adenine
200
What does mRNA do?
mRNA passes through the nuclear pores and goes to the ribosomes to give the codes to make proteins
300
What is DNA shaped like?
A double helix
300
Why does DNA replication occur?
DNA replication is necessary in order to create a duplicate cell
300
What does DNA stand for?
Deoxyribonucleic acid
300
What does a nucleotide consist of?
A sugar, a phosphate group, and a nitrogen base
300
DNA can be found in what organelles in the cell?
Mitochondria and chloroplast
400
What is a gene?
A gene is a segment of DNA that codes for a particular protein, which in turn codes for a trait
400
What 2 enzymes are used during DNA replication?
DNA Helicases, DNA Polymerase
400
What is an anticodon?
A sequence of three nucleotides forming a unit of genetic code in tRNA
400
What does Adenine pair to?
Thymine
400
Where in the cell are chromosomes located?
The nucleus
500
What are chromosomes composed (made) of what do they look like?
Thread-like. They are composed of genes.
500
What are hydrogen bonds?
A type of weak bond between base pairs that holds the double Helix together
500
What is a base pair?
A base pair is two chemical bases bonded to one another forming a "rung of the DNA ladder"
500
What does guanine pair to?
Cytosine
500
Why are the DNA molecules referred to as the 'blueprints of life'?
DNA tells the cell how to build the organism like a blue print does for a house
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