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Biological molecules MCQs with Keys for NMDCAT 2021

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  • Biological molecules MCQs with Keys for NMDCAT 2021

    Biomolecules are the molecules or ions present in an organism that are essential for the biological processes such as growth, development, cell division, etc. Biomolecules include large molecules or macromolecules such as proteins, carbohydrates, lipids, and nucleic acids, whereas the smaller molecules or macromolecules include metabolites and natural products.

    1. Which biomolecule is distributed more widely in a cell?
    1. Chloroplast
    2. RNA
    3. DNA
    4. Spaherosomes

    2. Which is a reducing sugar?
    1. Galactose
    2. Gluconic acid
    3. Sucrose
    4. β-methyl galactosidase

    3. Most abundant RNA in the cell
    1. rRNA
    2. mRNA
    3. tRNA
    4. tRNA threonine

    4. Name the simplest amino acid
    1. Alanine
    2. Tyrosine
    3. Asparagine
    4. Glycine

    5. Mineral associated with cytochrome is
    1. Mg
    2. Cu and Ag
    3. Fe
    4. Cu

    6. The most common secondary structure of proteins is
    1. β-pleated sheet
    2. β-pleated sheet parallel
    3. β-pleated sheet non-parallel
    4. α-helix

    7. The term enzyme was coined by
    1. Urey Miller
    2. Pasteur
    3. Kuhne
    4. Buchner

    8. β-oxidation occurs in
    1. Nucleus
    2. Cytoplasm
    3. Mitochondria
    4. Chloroplast

    9. Koshland’s theory of enzyme action is known as
    1. Lock and key theory
    2. Reduced fit theory
    3. Induced fit theory
    4. Enzyme coenzyme theory

    10. A high content of triglycerides are found in
    1. VLDL
    2. LDL
    3. HDL
    4. Chylomicrons

    11. Haemoglobin has
    1. Primary structure
    2. Secondary structure
    3. Tertiary structure
    4. Quaternary structure

    12. Which is the most abundant biomolecule on earth?
    1. Mineral salts
    2. Proteins
    3. Lipids
    4. Carbohydrates

    13. In which of the following an anticodon occurs
    1. tRNA
    2. mRNA
    3. rRNA
    4. DNA

    14. The fastest enzyme is
    1. DNA gyrase
    2. Pepsin
    3. DNA polymerase
    4. Carbonic anhydrase

    15. Which of the following is a phospholipid?
    1. Sterol
    2. Cholesterol
    3. Lecithin
    4. Steroid

  • #2

    Answer Key
    1- b 2- a 3- a 4- d 5- c 6- d 7- c 8- c
    9- c 10- d 11- d 12- d 13- a 14- d 15- c

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