General Science Biology Questions
31. Guinea pigs used in medical research belong to which of the following categories?
[A] Rodents
[B] Black swine
[C] Stocky and brown in colour
[D] Found in Asia only
[A] Rodents
Notes:
The guinea pig or domestic guinea pig also known as cavy or domestic cavy, is a species of rodent belonging to the family Caviidae and the genus Cavia.
32. At which of the following ages Rennin and lactase disappear in the human body?
[A] Two
[B] Three
[C] Five
[D] Eight
[A] Two
Notes:
By the age of two, the rennin and lactase enzymes start disappearing, however, these enzymes completely disappear by the age of eight in humans. After this, the stomach of person becomes mature enough to produce pepsin to digest the food.
33. Which of the following is the subject matter of genetics?
[A] Forms and features of plant parts
[B] Heredity and variations
[C] The disorder of living beings
[D] None of these
[B] Heredity and variations
Notes:
Genetics is the study of heredity in general and genes in particular. Genetics is one of the central pillars of biology and overlaps with many other fields such as agriculture, medicine and biotechnology.
34. The branch of science that deals with the study of the mental faculties of the brain including emotions is known as__?
[A] Phenology
[B] Phycology
[C] Phrenology
[D] Proctology
[C] Phrenology
Notes:
The branch of science that deals with the study of the mental faculties of the brain including emotions is known as Phrenology.
35. What is a jelly-like substance found floating inside the plasma membrane called?
[A] Cell sap
[B] Cytoplasm
[C] Karyoplasm
[D] Mitochondria
[B] Cytoplasm
Notes:
The jelly-like substance inside the plasma membrane in which all the organelles float is called cytoplasm.
36. Which of the following viruses is not linked to human cancer?
[A] Hepatitis C virus
[B] Hepatitis B virus
[C] Varicella-Zoster virus
[D] Herpes simplex virus type 2
[C] Varicella-Zoster virus
Notes:
Hepatitis C, Hepatitis B and Herpes simplex virus type 2 viruses which are linked to human cancer.
37. Which of the following can be done in the cultivation of plant viruses?
[A] Tissue culture
[B] Cultures of separated cells
[C] Whole plants
[D] All of the above
[D] All of the above
Notes:
The cultivation of plant viruses can be done in tissue culture, cultures of separated cells and whole plants.
38. Which of the following is a characteristic of angiosperms?
[A] Seed-bearing plants
[B] Seeds are enclosed within fruits
[C] Both 1 & 2
[D] Neither 1 nor 2
[C] Both 1 & 2
Notes:
Characteristics of angiosperms: Seed plants, seeds are sealed inside the fruit, presence of well differentiated plant body, produce flowers during their lifetime, presence of two subtypes – monocotyledonous and dicotyledonous.
39. Whooping cough is caused by which of the following?
[A] Bordetella pertussis
[B] Helicobacter pylori
[C] Yersinia pestis
[D] Treponema pallidum
[A] Bordetella pertussis
Notes:
Pertussis is a respiratory disease commonly known as whooping cough. It is a very contagious disease caused by a type of bacteria called Bordetella pertussis.
40. An anaerobic process in which energy can be released from glucose even when oxygen is not available is called__.
[A] Putrefaction
[B] Fermentation
[C] Glycolysis
[D] None of these
[B] Fermentation
Notes:
An anaerobic process in which energy can be released from glucose even when oxygen is not available is called Fermentation.
