DNA/RNA
true or false: DNA is double stranded
true
The leading strand
what is transcription
copying dna into rna
what happens during translation?
a ribosome uses the sequence of codons in mRNA to assemble amino acids into a polypeptide chain.
what is mutation ?
spontaneous change in DNA
where is DNA structure found ?
found in nucleus of eukaryotes
On which strand does DNA polymerase stop and back track leaving okazaki fragments
The lagging strand
what does RNA polymerase do?
It copies the rna version of DNA
The ribosome
When do mutations occur?
When the DNA is being copied or replicated
What does RNA stand for?
Ribonucleic acid
What type of bond forms between complimentary bases between two strands?
Hydrogen bonds
what does mRNA do?
How does the ribosome know which amino acid to add to the polypeptide?
Codons on the mRNA matching to the anticodon on the tRNA
what is mutation where one base is replaced with another?
A substitution mutation
Name the three main types of RNA
tRNA, mRNA, rRNA
Which enzyme attaches RNA primers for DNA polymerase to attach to?
Primase
where does transcription happen?
in the nucleus
why is translation important
because in the process of making proteins.
what is deletion?
Nucleotide is removed. Causes frameshift
Who Discovered the structure of DNA?
Hint: More then One person.
James Watson and Francis Crick. (Rosland Franklin)
DNA replication proceeds bidirectionally from this point on the molecule
Origin of replication
What gets cut out during mRNA processing? What gets left in?
cut out: Introns
Left in: Exons
Elongation is repeated until it gets to _____ ?
a stop codon
What type of mutation affects all nucleotides "downstream".