Oligopeptides Definition, Formation and Structure Quiz

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  • 1/10 Questions

    Which of the following oligopeptides is conjugated with drugs to make them more soluble for excretion?

    • Glutathione
    • Ceruletide
    • Tuftsin 
    • None of the above
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About This Quiz

Oligopeptides are short peptides consisting of 2-20 amino acids. Play this informative quiz on Oligopetides definitions, formation, and structure to see how much you know about these. The quiz contains various questions based on the structure and functions of oligopeptides. This quiz will not only gauge your knowledge but will also enhance it. Take the quiz to know more. If you like the quiz, do share it with your peers. All the best!

Oligopeptides Definition, Formation And Structure Quiz - Quiz

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  • 2. 

    Decapeptide found in the skin of Hyla caerulea

    • Teprotide

    • Ceruletide

    • Pepstatin

    • Leupeptin

    Correct Answer
    A. Ceruletide
    Explanation
    Ceruletide is the correct answer because it is a decapeptide that is found in the skin of Hyla caerulea, which is a species of tree frog. Ceruletide is known for its pharmacological effects on the gastrointestinal system, including stimulating the release of digestive enzymes and increasing the contraction of the gallbladder and pancreas. It is often used in medical treatments for various gastrointestinal disorders.

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  • 3. 

    Ceruletide contains

    • 8 amino acids

    • 6 amino acids

    • 10 amino acids

    • 4 amino acids

    Correct Answer
    A. 10 amino acids
    Explanation
    Ceruletide contains 10 amino acids. Amino acids are the building blocks of proteins, and ceruletide is a peptide hormone that is derived from a larger protein called cholecystokinin. It is composed of a chain of 10 amino acids linked together. These amino acids are essential for the biological activity and function of ceruletide in the body.

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  • 4. 

    The Cyclic peptides taken from carpophores of several different mushroom species is

    • Netropsin

    • Antipain

    • Amanitin  

    • Glutathione 

    Correct Answer
    A. Amanitin  
    Explanation
    Amanitin is a cyclic peptide found in the carpophores of several different mushroom species. It is known for its potent toxicity and is responsible for the majority of mushroom poisoning deaths worldwide. Amanitin inhibits RNA polymerase II, an enzyme involved in the transcription of DNA into RNA, leading to cell death.

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  • 5. 

    Which of the following oligopeptides is produced from Amanita phalloides (death cap)?

    • Antipain

    • Glutathione

    • Phalloidin

    • Microcystins

    Correct Answer
    A. Phalloidin
    Explanation
    Phalloidin is the correct answer because it is an oligopeptide that is produced from Amanita phalloides, commonly known as the death cap mushroom. Phalloidin is a toxic compound that binds to and stabilizes actin filaments, leading to disruption of cellular function and ultimately cell death. It is one of the main toxins responsible for the deadly effects of Amanita phalloides poisoning. Antipain, glutathione, and microcystins are not oligopeptides produced by Amanita phalloides.

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  • 6. 

    Which of the following acts as a protease inhibitor?

    • Tuftsin 

    • Glutathione

    • Transferrin

    • Leupeptin

    Correct Answer
    A. Leupeptin
    Explanation
    Leupeptin acts as a protease inhibitor. Proteases are enzymes that break down proteins by cleaving peptide bonds. Leupeptin inhibits the activity of proteases by binding to them and preventing them from carrying out their function. This inhibition helps to regulate protease activity and prevent excessive protein degradation.

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  • 7. 

    Which of the following oligopeptides is synthesized through Ribosomic pathways?

    • Microcystins and cyclamides

    • Cyclamides and microviridins

    • Microcystins and microviridins

    • Cyclamides and microviridins

    Correct Answer
    A. Microcystins and microviridins
    Explanation
    Microcystins and microviridins are both examples of oligopeptides that are synthesized through ribosomal pathways. Microcystins are cyclic peptides produced by cyanobacteria, and they are known for their hepatotoxic effects. They are synthesized by non-ribosomal peptide synthetases (NRPS) encoded by genes within the cyanobacteria. Microviridins are protease inhibitors produced by cyanobacteria. They inhibit serine proteases and are also synthesized through ribosomal pathways. The genes encoding microviridin biosynthesis are found in the genomes of the cyanobacteria.

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  • 8. 

    Which of the following oligopeptides is isolated from Actinomycetes?

    • Pepstatin

    • Glutathione

    • Antipain

    • Leupeptin

    Correct Answer
    A. Leupeptin
    Explanation
    Leupeptin is a protease inhibitor that is isolated from Actinomycetes, a group of bacteria known for producing various bioactive compounds. It is an oligopeptide with the ability to inhibit proteolytic enzymes, particularly serine and cysteine proteases. Leupeptin is commonly used in laboratory research to prevent protein degradation and proteolysis.

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  • 9. 

    Which of the following is a synthetic nonapeptide?

    • Pepstatin

    • Microcystins

    • Leupeptin

    • Teprotide

    Correct Answer
    A. Teprotide
    Explanation
    Teprotide is a synthetic nonapeptide because it is a peptide composed of nine amino acids that has been artificially created in a laboratory. It is not naturally occurring and is used as a medication for treating hypertension. Pepstatin, Microcystins, and Leupeptin are all naturally occurring peptides and not synthetic nonapeptides.

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  • 10. 

    A tetrapeptide manufactured in the spleen is

    • Glutathione

    • Teprotide

    • Tuftsin

    • Pepstatin

    Correct Answer
    A. Tuftsin
    Explanation
    Tuftsin is a tetrapeptide that is manufactured in the spleen. It plays a crucial role in immune system regulation by stimulating the production of certain white blood cells called phagocytes. These phagocytes help in the elimination of foreign substances and pathogens from the body. Therefore, tuftsin is an important peptide involved in the immune response and is produced in the spleen.

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  • Current Version
  • Jan 30, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 05, 2022
    Quiz Created by
    Amit Mangal
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