Biomolecules: Metabolite Types
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Questions and Answers

What term is used to describe the thousands of organic compounds such as amino acids and sugars found in living organisms?

  • Metabolites (correct)
  • Catalysts
  • Polymers
  • Polypeptides

Which of the following is classified as a primary metabolite?

  • Carotenoids
  • Rubber
  • Alkaloids
  • Amino acids (correct)

What distinguishes secondary metabolites from primary metabolites?

  • They have identifiable functions in normal physiological processes.
  • They only exist in animal tissues.
  • Their roles in physiological processes are well understood.
  • They include compounds like flavonoids and essential oils. (correct)

Which of the following nucleotides is classified as a pyrimidine?

<p>Thymine (C), Uracil (D)</p> Signup and view all the answers

What sugar component is found in ribonucleic acid (RNA)?

<p>Ribose (D)</p> Signup and view all the answers

Which of the following secondary metabolites is used as a drug?

<p>Curcumin (D)</p> Signup and view all the answers

What is the building block of nucleic acids?

<p>Nucleotide (C)</p> Signup and view all the answers

Which of the following is a component of nucleotides?

<p>Nitrogenous base (A)</p> Signup and view all the answers

Flashcards

Primary vs. Secondary Metabolites

Primary metabolites are essential for basic life processes, while secondary metabolites are often not necessary for growth but have various ecological and medicinal functions.

What are Primary Metabolites?

They are organic compounds that are found in all living organisms and are essential for basic life functions, e.g., sugars, amino acids.

What are Secondary Metabolites?

These compounds are often produced in specific plant, fungal, or microbial groups. They can have various functions, such as defense, attracting pollinators, or serving as medicinal agents.

What are Nucleic Acids?

These are long chains of nucleotides, which themselves are composed of a nitrogenous base, a sugar, and a phosphate group.

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What are the Nitrogenous Bases in Nucleic Acids?

Adenine (A), Guanine (G), Cytosine (C), and Thymine (T) are the four bases found in DNA. Uracil (U) replaces Thymine in RNA.

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What is the Difference between Ribose and Deoxyribose?

The sugar found in DNA is deoxyribose, while RNA uses ribose. The difference lies in the presence or absence of an oxygen atom at the 2' carbon position.

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What is DNA?

DNA is the molecule that encodes the genetic instructions of an organism. It is the blueprint for life!

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What is RNA?

RNA plays a crucial role in decoding the genetic information from DNA to build proteins. Different types of RNA have specific roles.

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Study Notes

Biomolecules: Primary and Secondary Metabolites

  • Biomolecules include thousands of organic compounds like amino acids and sugars.
  • These are categorized as "metabolites."
  • Primary metabolites are found in animal tissues and include various compounds.
  • Secondary metabolites are found in plants, fungi, and microbes; thousands of compounds beyond primary types (alkaloids, flavonoids, rubber).
  • Primary metabolites have known functions in physiological processes.
  • Roles of many secondary metabolites in host organisms are not fully understood.
  • However, many secondary metabolites are beneficial to humans (e.g., rubber, drugs, spices).
  • Some secondary metabolites have ecological importance.

Examples of Secondary Metabolites

  • Pigments: Carotenoids, Anthocyanins
  • Alkaloids: Morphine, Codeine
  • Terpenoids: Monoterpenes, Diterpenes
  • Essential oils: Lemon grass oil
  • Toxins: Abrin, Ricin
  • Lectins: Concanavalin A
  • Drugs: Vinblastin, curcumin
  • Polymeric substances: Rubber, gums, cellulose

Nucleic Acids

  • Nucleic acids are another type of macromolecule found in living tissues.
  • They are polynucleotides.
  • Important macromolecules alongside polysaccharides and polypeptides.
  • The building block of nucleic acids is a nucleotide.
  • A nucleotide has three parts:
    • Heterocyclic compound (nitrogenous base)
    • Monosaccharide (sugar)
    • Phosphoric acid (or phosphate)
  • Nitrogenous bases in nucleic acids include adenine, guanine, uracil, cytosine, and thymine.
  • Adenine and Guanine are purines.
  • Uracil, cytosine, and thymine are pyrimidines.
  • The sugar can be ribose or 2'-deoxyribose.
  • Nucleic acid with deoxyribose is DNA.
  • Nucleic acid with ribose is RNA.

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Description

Explore the fascinating world of biomolecules in this quiz, focusing on primary and secondary metabolites. Learn about their roles in different organisms and their significance to humans and ecology. Test your knowledge on examples and functions of these essential compounds.

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