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Exam (elaborations) PIO Human Physiology
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HUMAN PHYSIOLOGY, SVM ”SAMPLE QUESTION1. The subunits of 70S ribosomes include
a. 40S and 50S b. 30S and 40S
c. 30S and 50S d. 20S and 50S
2. Which of the following ions are required for binding of ribososmal subunits
a. Na+
b. Mg++
c. Mn++ d. Fe++
3. 70S ribosomes occur in
a. Viruses b. prokaryotes
c. eukaryotic plant cells d. eukaryotic animal cells
4. Ribosomes are made up of
a. RNA only b. RNA and Proteins
c. RNA,DNA and Proteins d. nucleic acids, proteins and lipids
5. The rough ER is specially well developed in cells actively engaged in
a. Protein synthesis b. Nucleotide synthesis
c. Lipid synthesis d. Secretory functions
6. The nucleus contains
a. Mitochondria b. Golgi apparatus
c. Chromosomes d. Lysosomes
7. Plasma membrane is
a. Permeable b. Selectively permeable
c. Impermeable d. Semi-permeable
8. Most accepted structural model of plasma membrane is
a. Sandwitch model b. Unit membrane model
c. Lamellar model d. Fluid-mosaic model
9. Plasma membrane is composed of
a. Glycoproteins b. Lipoproteins
c. Chromoproteins d. Lipids
10. Ribosomes contain maximum amount of
a. Steriods b. Lipids
, c. RNA d. DNA
11. Which structure is present in animal cell but is absent from plant cell ?
a. Centrioles b. Golgi apparatus
c. Mitochondria d. Endoplasmic reticulum
12. A unit membrane is about :
a. 50-60 Å thick b. 60-75 Å thick
c. 75-100 Å thick d. 100-120 Å thick
13. The enzymes which break up starch into sugar are called
a. Hydrolases b. Amylases
c. Lipases d. Nucleases
14. Apoenzyme is a
a. Protein b. Carbohydrate
c. Vitamin d. Amino acid
15. The enzyme which break up nucleic acid into nucleotides are called
a. Nucleases b. Amylases
c. Proteases d. Hydrolases
16. Coenzyme is :
a. Always a protein b. Often a metal
c. Always an inorganic compound d. Often a vitamin
17. Enzymes are named after their substrates by adding suffix :
a. -in b. -ase
c. -ose d. -sin
18. Enzyme exist in the cells as-
a. Solid b. Crystals
c. Colloid d. None of the above
19. An enzyme brings about :
a. Reduction in activation energy b. Increase in reaction time
c. Increase in activation energy d. All the above
20. Which of the following statement is “NOT’ correct
a. All enzymes are thermolabile b. All enzymes are biocatalysts
c. All enzymes are proteins d. All proteins are enzymes
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