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Chapter 14
From DNA to Protein
30
Biology
Undergraduate 1
12/08/2011

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Term
Transcription
Definition
first step in protein synthesis
Term
How many RNA molecules are required for protein synthesis
Definition
3
mRNA
rRNA
tRNA
Term
mRNA
Definition
messenger RNA; the only class that carries the protein building codes
Term
tRNA delivers __
Definition
amino acid
Term
RNA bases are:
Definition
Adenine
Cytosine
Guanine
Urasil
Term
Promoter
Definition
start signal
Term
Exons
Definition
protein codiing base sequences
Term
Introns
Definition
noncoding sequences
Term
What helps explain how human cells can make hundred of thousands of protein from 21500 or so genes?
Definition
alternative splicing
Term
Codons
Definition
base triplets of mRNA
Term
How many amino acid in proteins
Definition
20
Term
Anticodon
Definition
ribonucleotide base triplet that can base pair with a complementary codon in an mRNA transcript
Term
"Wobble Effect"
Definition
codon-anticodon pairing
Term
Three stages of translation
Definition
Initiation
Elongation
Termination
Term
What starts the initiation
Definition
tRNA
Term
Gene mutation
Definition
permanent change in one or more bases in the nucleotide sequence of DNA
Term
DNA contains many different gene regions that are transcribed into different __
Definition
mRNAs, tRNAs, rRNAs
Term
An RNA molecule is typically __
Definition
single-stranded
Term
An mRNA molecule is synthesized by __
Definition
transcripted
Term
Each codon specifies a(n) __
Definition
amino acid
Term
__ different codons represent a near-universal genetic codon.
Definition
64
Term
Anticodons pair with __
Definition
mRNA codons
Term
__ can cause gene mutations.
Definition
replication errors
transposons
ionizing radiation
non-ionizing radiation
Term
protein-coding parts of a mature mRNA transcript
Definition
exons
Term
base triplet for amino acid
Definition
codon
Term
second stage of translation
Definition
chain elongation
Term
base triplet; pairs with codon
Definition
anticodon
Term
one environmental agent that induces mutation in DNA
Definition
alkylating agent
Term
set of 64 codons for mRNA
Definition
genetic code
Term
noncoding part of pre-mRNA transcript, removed before translation
Definition
introns
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