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MOLECULAR GENETICS QUESTION LOOP
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Semi-conservative
[START] What are building blocks of
nucleic acids?
Nucleotides
What is the name of the sugar in
DNA?
Deoxyribose
What type of reaction joins
nucleotides together?
Condensation
What are the 4 letters for the DNA
bases?
A, T, C, G
What base is on RNA and not DNA
Uracil
Which enzyme transcribes DNA?
RNA Polymerase
What does RNA polymerase make?
MRNA
How does mRNA leave the nucleus?
Through a nuclear pore
Where does translation occur?
At a ribosome
Which molecule brings specific
amino acids to ribosomes?
tRNA
What is the name for 3 bases on an
mRNA strand?
Codon
What does the codon bind to?
Anticodon
How many different amino acids are
there?
1
20
How many different codons are
there?
64
What AUG is the codon for?
The start of a polypeptide
What bond joins the amino acids?
Peptide
What is a chain of amino acids
called?
Polypeptide
What is a length of DNA that codes
for a polypeptide?
A gene
What is a collection of ribosomes
called?
A polysome
What organelle do ribosomes
frequently attach to?
Rough endoplasmic reticulum
What word is used to describe the
fact that several codon codes are
used for the same amino acid?
Degenerate code
What are the 2 purine bases?
A&G
What bonds hold the polynuclear
strands together in DNA?
Hydrogen bonds
What model describes the process
of DNA replication?
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