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Chap 12: DNA and RNA
n/a
49
Biology
10th Grade
12/04/2010

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Term
What was Griffith studying?
Definition
bacteria that causes pneumonia
Term
What molecule determines our traits?
Definition
DNA
Term
What process did Griffith discover?
Definition
transformation
Term
What did Avery determine?
Definition
protein does not control traits
Term
Bacteriophage
Definition
virus
Term
What did Hershey-Chase determine?
Definition
DNA determines traits
Term
3 parts of nucleotide
Definition
phosphate + sugar + nitrogen base
Term
Purines
Definition
A + G
2 rings
Term
Pyrimidines
Definition
C + T
1 ring
Term
Nitrogen bases always bind with _________.
Definition
sugar
Term
Chargaff"s base pairing rules
Definition
A+T
G+C
Term
Who took X-Ray photos of DNA and determined the helix shape?
Definition
Franklin
Term
Who determined the double helix?
Definition
Watson + Crick
Term
A:___ hydrogen bonds:T
Definition
2
Term
G:__ hydrogen bonds:C
Definition
3
Term
Histone
Definition
protein chromatin wraps around
Term
What are chromosomes made of?
Definition
DNA + histones
Term
Helicase
Definition
enzyme that breaks down hydrogen bonds
Term
DNA polymerase
Definition
links DNA molecules
Term
Replication
Definition
cell duplicates DNA
Term
Definition
replication
Term
DNA sugar
Definition
deoxyribose
Term
RNA sugar
Definition
ribose
Term
How many strands in RNA?
Definition
1
Term
How many strands in DNA?
Definition
2
Term
Bases of RNA
Definition
C + G + A + U
Term
What are the three types of RNA?
Definition
M (messenger) + R (ribosome) + T (transfer)
Term
M
Definition
carries instructions to ribosome
Term
R
Definition
in ribosome
Term
T
Definition
brings amino acid to ribosome
Term
peptide bonds
Definition
bonds between proteins
Term
Transcription
Definition
DNA is used to produce M RNA
Term
Where does transcription take place?
Definition
nucleus
Term
codon
Definition
3 nucleotides
Term
What determines amino acid?
Definition
M RNA
Term
Translation
Definition
M RNA connects to T RNA in ribosome to make a protein
Term
Where does translation take place?
Definition
cytoplasm
Term
Ribosome holds __ T RNA.
Definition
2
Term
Anti-codon is on __ RNA.
Definition
T
Term
Codon is on __ RNA.
Definition
M
Term
How do mutations occur?
Definition
random mistakes
environmental factors
Term
Point mutation
Definition
1 nucleotide is affected
Term
What is a type of point mutation?
Definition
substitution
Term
Frameshift mutation
Definition
changes the reading order of messages
Term
2 types of frameshift mutation
Definition
insertion + deletion
Term
Chromosomal mutations
Definition
deletion
duplication
inversion
translocation
Term
duplication
Definition
1 gene is added
Term
inversion
Definition
order of genes is mixed up
Term
translocation
Definition
non-homologous chromosomes crossing over
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