81. Which component in light causes suppression of melatonin produced by the pineal gland?
[A] Red
[B] Blue
[C] Green
[D] Indigo
Show Answer
82. Who among the following proved that Bacteria don’t originate by spontaneous generation?
[A] Redi
[B] Pasteur
[C] Hooke
[D] Shleiden
Show Answer
Correct Answer: B [Pasteur]
83. Which among the following is not an Enzyme?
[A] Gastrin
[B] Ptyalin
[C] Pepsin
[D] Rennin
Show Answer
Correct Answer: A [Gastrin]
Notes:
Gastrin, is a hormone, stimulates secretion of gastric acid (HCl) by the parietal cells of the stomach and aids in gastric motility
84. A four chambered heart is found in which of the following?
[A] mammals only
[B] mammals and fish
[C] mammals & Birds
[D] mammals and Amphibians
Show Answer
Correct Answer: C [mammals & Birds]
Notes:
Archosaurs (crocodilians and birds) and mammals show complete separation of the heart into two pumps, for a total of four heart chambers;
85. Who among the following worked on Tuberculosis?
[A] Robert Koch
[B] Karl Ernst von Baer
[C] Erwin Neher
[D] Richard Goldschmidt
Show Answer
Correct Answer: A [Robert Koch]
Notes:
Before 1880s, tuberculosis was considered to be an hereditary disease. Koch, through his experiments was able to prove that causative agent of tuberculosis is the slow-growing Mycobacterium tuberculosis. He tried to develop a drug Tuberculin also to treat TB but eventually that drug did not work.
86. Which among the following causes ‘Dumdum Fever’ or Kala Azar?
[A] Bacteria
[B] Fungi
[C] protozoa
[D] Virus
Show Answer
Correct Answer: C [protozoa]
Notes:
Kala Azar is also known as Dum dum fever and Visceral leishmaniasis . Its caused by protozoa of Leishmania genus, vector is sandfly
87. Which among the following is caused by Virus?
[A] Mumps
[B] Beri Beri
[C] Tuberculosis
[D] Dysentery
Show Answer
Correct Answer: A [Mumps]
88. Which among the following is the first country to issue research licenses for human embryonic cloning to create stem cells?
[A] United States
[B] Australia
[C] Germany
[D] Britain
Show Answer
Correct Answer: D [Britain]
89. Which among the following correctly denotes Net Reproduction Rate?
[A] Average number of children that would be born to a woman over her lifetime
[B] Average number of children that would be born to a couple over their life time
[C] Birth Rate — Death rate
[D] The rate at which women are replaced by daughters who will have children
Show Answer
Correct Answer: D [The rate at which women are replaced by daughters who will have children]
90. In which of the following branches of science study of functions, characteristics, and phenomena observed in the living world and the application of this knowledge to world of machine is studied?
[A] Biometry
[B] Bionics
[C] Bionomy
[D] Bionomy
Show Answer
Correct Answer: B [Bionics]
