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Doctors Medicines MCQs Q&A

The drug that inhibits protein synthesis is:

The drug that inhibits protein synthesis is: Correct Answer All of the above

Concept:-

Protein synthesis:

  • A protein is a polymer that consists of monomers called amino acids.
  • A protein consists of 50 or more amino acids.
  • Every protein is synthesized in accordance with instructions contained in DNA.
  • The new proteins will have structural and functional roles in cells.
  • Other substances which are also examples of proteins are amongst others enzymes and hormones.
  • Life cannot exist without proteins, enzymes, hormones, and other proteins.

Mechanism of protein synthesis:

Protein synthesis falls into three stages.

  1. Initiation – the assembly of a ribosome on an mRNA molecule.
  2. Elongation – repeated cycles of amino acid addition.
  3. Termination – the release of the new protein chain.

Drugs that inhibit protein synthesis:

  • Oxazolidinones.
  • Chloramphenicol
  • Macrolides and ketolides.
  • Streptogramins.
  • Tetracycline and glycylcycline
  • Erythromycin

Related Questions

Phytase, an enzyme produced by Aspergillus niger can be adsorbed on microcrystalline cellulose powder (MCCP). The adsorption follows a Langmuir isotherm and the maximum concentration of the protein that can be obtained on the adsorbent is 70 mg cm-1. At a concentration of 50 mg L-1 of protein in the solution, the concentration of protein on the adsorbent reaches 35 mg cm-1. It is desired to recover 90% of the protein from 1.5 liter of the cell free culture filtrate containing 220 mg L-1 protein by addition of MCCP to the solution. The concentration of the protein adsorbed on the solid at equilibrium will be:
Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer :

Statements : About 50 per cent of the animal by-products - hair, skin, horns etc. is edible protein. American chemists have developed a method of isolating 45 per cent of this protein. They used an enzyme developed in Japan to break down soya protein.

Conclusions :
I. Americans have not been able to develop enzymes.
II. Animal by-products protein has the same composition as soya protein.
In an experimental study of the effects of a new drug on depression a double-blind control technique is used, which of the following persons should not be informed as to which drug, experimental or placebo is being administered to each individual research participant?
1. Research participants in the experimental group.
2. Research participants in the control group.
3. Persons administering the drug.
4. Persons evaluating the drug effect.
Select the correct answer:
AMPK inhibits fatty acid synthesis and cholesterol synthesis.
Which of the following inhibits protein synthesis by combining with the 50S subunit ribosome?
Name the antibiotic which inhibits protein synthesis in eukaryotes?
The extent of drug-protein binding can change with both changes in protein and drug concentration.
Consider the following proteins: I. Chromo Protein  II. Peptone  III. Proteinase  Considering that there are three types of proteins namely Simple Protein, Conjugated Protein, and Derived Protein, which among the above is the odd one out with respect to the types mentioned above?
Protein A will fold into its native state only when protein B is also present in the solution. However, protein B can fold itself into native confirmation without the presence of protein A. Which of the following is true?
Protein’s solubility depends on the relative balance between protein-solvent and protein-protein interactions.