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
The 70S ribosomes of prokaryotes are composed of which subunits?
60S and 40S
50S and 30S
40S and 20S
80S and 60S
Which of these is responsible for protein synthesis in prokaryotes?
Mitochondria
Ribosomes
Endoplasmic reticulum
Golgi apparatus
Which organelle is responsible for protein synthesis in eukaryotic cells?
Mitochondria
Ribosomes
Golgi apparatus
Lysosomes
Which of the following is a function of the nucleolus?
DNA replication
Protein synthesis
Ribosome subunit assembly
Cellular respiration
Which of the following cell organelles is NOT directly involved in protein synthesis?
Ribosomes
Rough Endoplasmic Reticulum
Smooth Endoplasmic Reticulum
Golgi Apparatus
What is the primary function of the nucleolus?
DNA replication
Protein synthesis
Ribosome biogenesis
Cellular respiration
Which organelle is responsible for protein synthesis?
Endoplasmic Reticulum
Ribosomes
Nucleus
Vacuoles
Certain antibiotics inhibit bacterial protein synthesis by targeting the 30S ribosomal subunit. Which of the following processes related to translation would be MOST directly affected by such antibiotics?
Translocation of the ribosome along the mRNA
Formation of peptide bonds
Binding of mRNA to the ribosome
Release of the completed polypeptide chain
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.
