Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
Which of the following is NOT a characteristic feature exclusively found in prokaryotic 70S ribosomes?
Presence of 16S rRNA in the small subunit
Sensitivity to antibiotics like streptomycin
Presence of 28S rRNA
Sedimentation coefficient of 70S
What is the primary function of the nucleolus?
DNA replication
Protein synthesis
Ribosome biogenesis
Cellular respiration
A mutation in the 23S rRNA of the large ribosomal subunit affects peptidyl transferase activity. Which stage of translation is MOST directly impacted by this mutation?
Initiation
Elongation
Termination
mRNA binding
Why is the existence of the ribosome considered further evidence for the RNA world hypothesis?
Ribosomes are primarily composed of proteins.
Ribosomes synthesize DNA.
The catalytic core of the ribosome is made of rRNA.
Ribosomes are found only in eukaryotes.
A mutation in the 16S rRNA of the prokaryotic ribosome could directly affect which stage of translation?
Elongation
Termination
Initiation
All stages
In eukaryotes, RNA polymerase III plays a crucial role in the synthesis of:
tRNA, 5S rRNA, and snRNA
mRNA
rRNA
snRNA
Which of the following statements is INCORRECT regarding the function of RNA polymerase III in eukaryotes?
It transcribes most messenger RNA (mRNA) molecules.
It transcribes transfer RNA (tRNA) molecules.
It transcribes 5S ribosomal RNA (5S rRNA).
It transcribes some small nuclear RNA (snRNA) molecules.
Which of the following is NOT directly involved in the translation process during protein synthesis?
mRNA
tRNA
rRNA
snRNA
During protein synthesis, all of the following RNAs play a direct role EXCEPT:
mRNA
tRNA
miRNA
rRNA
