31 terms

DNA Flashcards

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Where does DNA replication occur?
in the nucleus
Where does transcription occur?
in the nucleus
DNA and RNA are made up of what building block?
nucleotides
What are the three parts of a nucleotide?
phosphates, sugars, and nitrogenous bases
What are the four bases (letters) in DNA?
Adenine, Thymine, Cytosine, and Guanine
What are the four bases (letters) in RNA?
Adenine, Uracil, Cytosine, and Guanine
What is the sugar in DNA?
deoxyribose
What is the sugar in RNA?
ribose
What is the shape of DNA?
a double helix
What is the shape of RNA?
single stranded
In RNA, which base pairs with Adenine?
Uracil
In DNA, which base pairs with Adenine?
Thymine
What are the two scientists who built the first 3D DNA model?
Watson and Crick
What is the name of the scientist who made the rules for A-T and C-G?
Chargaff
Which type of RNA carries the message from the nucleus to the ribosomes?
mRNA
Which type of RNA carries amino acids to the ribosomes?
tRNA
What type of RNA is the ribosome made of?
rRNA
Nucleic acids are made of subunits known as this.
nucleotides
When does DNA replication occur?
S phase of interphase
What contains codons?
mRNA
Every codon codes for one of these building blocks of protein.
amino acids
Which enzyme unwinds the DNA and breaks hydrogen bonds during replication?
DNA Helicase
Which enzyme adds free floating nucleotides during replication?
DNA Polymerase
Which enzyme adds free floating nucleotides during transcription?
RNA Polymerase
In transcription, what is the name of the DNA strand that is used? The one that is not used?
used: sense strand
not used: nonsense strand
What carries the anticodon?
tRNA
Where does translation occur?
in the cytoplasm (ribosomes)
Translation will continue until this is reached.
stop codon
If a sequence of codons is ACG, what would the anticodon be?
UGC
What bond forms between amino acids?
peptide bond
If a sequence of DNA is ATGAC, what would the RNA sequence transcribed from it be?
UACUG