11. Who is known as the ‘Father of Bacteriology’?
[A] Louis Pasteur
[B] Leeuwenhoek
[C] Robert Hooke
[D] Edward Jenner
Show Answer
Correct Answer: A [Louis Pasteur]
Notes:
Louis Pasteur is considered as father of Bacteriology. Louis Pasteur was a French chemist and microbiologist who was one of the most important founders of medical microbiology. He pioneered the study of molecular heterogeneity; discovered that microorganisms cause fermentation and disease; Initiated the process of pasteurization and developed vaccines against anthrax and rabies.
12. Who among the following discovered Vitamin C?
[A] Albert Szent-Györgyi
[B] Funk
[C] Evans and Bishop
[D] Henrik Dam
Show Answer
Correct Answer: A [Albert Szent-Györgyi]
Notes:
Albert Szent-György is the scientist who discovered Vitamin C. Vitamin C is a water-soluble vitamin. The chemical name is Ascorbic acid.
13. Which of the following is the function of contractile vacuole?
[A] To carry out pinocytosis
[B] To carry out metabolic process
[C] To pump excess water out of the cell
[D] To carry out phagocytosis
Show Answer
Correct Answer: C [To pump excess water out of the cell]
Notes:
Contractile vacuoles that regulate intracellular water balance by storing and expelling excess water from the cell.
14. Protein is made up of which of the following?
[A] Sugar
[B] Amino acid
[C] Carbohydrate
[D] Fatty acid
Show Answer
Correct Answer: B [Amino acid
]
Notes:
All proteins are linked by a peptide link and are polymers of amino acids. Amino acid is the building block of protein.
15. Which of the following can affect proteins and nucleic acids, but not viruses?
[A] Denaturation
[B] Enzyme treatment
[C] Pressure
[D] All of these
Show Answer
Correct Answer: D [All of these]
Notes:
Because it affects proteins upon denaturation, this nuclease enzymes affect nucleic acids and the pressure will affect the structure but not the virus.
16. What is an evolutionary important character of Selaginella?
[A] Strobili
[B] Rhizophore
[C] Heterosporous nature
[D] Ligule
Show Answer
Correct Answer: C [Heterosporous nature]
Notes:
The evolutionary important character of Selaginella is the heterogametic nature. Selaginella produces two types of spores, microspores and megaspores and in heterospory, the life cycle of Selaginella leads to seed habit formation.
17. Which of the following is not a form of bacteria?
[A] Coccus
[B] Bacillus
[C] Vibrio
[D] Lobosa
Show Answer
Correct Answer: D [Lobosa]
Notes:
Lobosa is a taxonomic group of amoeba in the Amoebozoa genus.
18. Which of the following materials are acted upon by putrefying bacteria?
[A] Fat
[B] Protein
[C] Carbohydrate
[D] Vitamins
Show Answer
Correct Answer: B [Protein]
Notes:
The primary energy source for putrefying bacteria, also known as decay bacteria, is Protein. While they can break down diverse types of biological material, they primarily act on proteins due to their constituent amino acids, which provide an ideal nutrient source. Their interaction with proteins results in decay and decomposition, a critical part of the biogeochemical cycle in nature.
19. What are the characteristics of Pteridophyta?
[A] They are cryptogams, seedless and vascular
[B] The plant body has true roots, stem and leaves
[C] Spores develop in sporangia
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Pteridophytes are considered the first plants to develop on land, they are cryptogams, seedless and vascular, the plant body has true roots, stems and leaves, spores develop into sporangia, sporangia in clusters on the sporophyll sex organs are multicellular.
20. What are the characteristics of gymnosperms?
[A] naked seeds
[B] separate female and male gametes
[C] pollination by wind, and tracheids
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
The characteristics of gymnosperms are naked seeds, separate female and male gametes, pollination by wind, and tracheids.
