DNA
Which of the following takes the genetic code to the cytoplasm
mRNA
What type of bond holds the nucleotides to each other?
Covalent bonds
DNA contains four kinds of nitrogenous bases
1. Adenine(A) 2. Guanine(G) 3. Cytosine(C) 4. Thymine(T)
Nucleotides in DNA are made of three basic components
1. Deoxyribose 2. Phosphate group 3. Nitrogenous base
DNA replication results in
2 DNA molecules that each contain a strand of the original
Which two nitrogenous bases are purines?
A & G
Which nitrogenous bases have two rings in their structure?
A & G... Purine
A gene is
A segment of DNA that codes for a protein
What are the base pairing rules?
A-T C-G Purine- puridinine
Chargaff rule
Adenine molecules equals the number of thymine molecules and cytosine equals guanine
Which of the following best describes the arrangement of the sides of the DNA molecule
Antiparallel
Which scientist furthered Griffiths experiment to determine that DNA was the "transforming principle"?
Avery
In DNA _____ can be joined in any order
Base pairs
Prokaryotic crops replicate their DNA before they undergo what division process
Binary fission
Chargaff
Certain nucleotides always existed in the same amount
Who discovered that certain nitrogenous bases always existed in the same amount
Chargaff
The nucleotides in DNA are joined by
Covalent bonds
DNA stands for
Deoxyribonucleic acid
RNA differs from DNA by
Different kind of sugar, single strand, has uracil
Purine
Double rings
Franklin
Found the first image of DNA( photo 51)
Watson and Crick
Found the structure of DNA, double helix shape
Which scientist discovered that DNA had a double strand by using x-rays?
Franklin
C is to__
G
A stretch of a chromosome that codes for a trait can be called a
Gene
Who discovered the "transforming principle"
Griffith
How is the double strand of DNA opened or unzipped?
Helicase
The enzymes that break hydrogen bonds and unwind DNA
Helicases
Who discovered that DNA is passed to the next generation by working with viruses and bacteria?
Hershey and Chase
What type of bonds hold the two strands of DNA together?
Hydrogen bonds
Holds two strands together
Hydrogen bonds(weak attraction)
Coping info
Replication occurs before mitosis and meiosis
Storing info
Must contain instructions for making two things the same
X-Ray crystallography
Nitrogenous were near the middle and that there were two strands in a helix structure
The building block of DNA
Nucleic acids
What is the monomer of DNA
Nucleotides
Transmits info
Passed along next generation during cell division
During replication what enzyme adds complimentary bases?
Polymerase
What enzyme adds nucleotides to the original strand of DNA during replication
Polymerase
What is the role of primase
Preps for the replication
A & G
Purine
Function of DNA
Stores info, copies info, transmits info
A is to___
T
Which nitrogenous bases ares pyrimidines?
T and C
What is this region called where the strand separates?
The replication fork
The process by which RNA is made from DNA
Transcription