During translation, a tRNA molecule carrying a specific amino acid recognizes the corresponding codon on the mRNA through its anticodon. A mutation occurs in the anticodon loop of a tRNA specific for alanine, changing it from 3'-CGI-5' to 3'-CCI-5'. Assuming the wobble hypothesis applies, what is the MOST LIKELY consequence of this mutation?
The tRNA will no longer recognize any codons.
The tRNA will insert glycine into the polypeptide chain instead of alanine.
The tRNA will still carry alanine but will recognize different alanine codons.
The mutation will have no effect on protein synthesis.
Related Questions
Multiple ribosomes can translate a single mRNA molecule concurrently, producing multiple polypeptide chains. These clusters of ribosomes on mRNA are known as:
Polysomes
Nucleosomes
Lysosomes
Ribonucleoproteins
Protein synthesis is initiated when:
the small ribosomal subunit binds to the mRNA
the polypeptide chain is released from the ribosome
RNA polymerase binds to the DNA template
amino acids are activated by ATP
Which type of RNA is transcribed by RNA polymerase III in eukaryotic cells?
mRNA
tRNA and 5S rRNA
snRNA
rRNA (excluding 5S rRNA)
A bacterial ribosome (70S) consists of approximately how many different proteins?
21
34
55
85
What is the start codon in most organisms?
UAA
UAG
UGA
AUG
What structure is formed when multiple ribosomes bind to and translate the same mRNA molecule simultaneously?
Nucleosome
Spliceosome
Polysome
Ribosome complex
The small subunit (30S) of a prokaryotic ribosome is composed of approximately how many different proteins?
10
21
34
55
Translation in eukaryotes occurs?
In the nucleus
On the ribosomes
In the nucleolus
In the golgi
Assertion: RNA polymerase III transcribes tRNA in eukaryotes.
Reason: tRNA is involved in carrying amino acids during protein synthesis.
Both A and R are true, and R is the correct explanation of A
Both A and R are true, but R is not the correct explanation of A
A is true, but R is false
A is false, but R is true
The process of translation of mRNA to proteins begins as soon as:
mRNA enters the cytoplasm
mRNA enters the nucleus
DNA enters the cytoplasm
tRNA enters the ribosome
