31. Myopia may occur because __
[A] the eyeball is too short from front to back
[B] the eyeball is elongated from front to back
[C] the muscles that control the lens may lose power as people grow older
[D] None of these
Show Answer
Correct Answer: B [the eyeball is elongated from front to back]
Notes:
Myopia may occur because the eyeball is elongated from front to back. Myopia or nearsightedness occurs when the light coming into the eye is not directly on the retina but in front of it.
32. The least distance of distinct vision for a young adult with normal vision is __
[A] 25 m
[B] 20 m
[C] 25 cm
[D] 20 cm
Show Answer
Correct Answer: C [25 cm]
Notes:
The least distance of distinct vision for a young adult with normal vision is 25 cm.
33. What is the diameter of thick filaments?
[A] 10nm
[B] 16mm
[C] 12nm
[D] 16nm
Show Answer
Correct Answer: B [16mm]
Notes:
The diameter of thick is 16mm. The thick filament is made up of a biphasic, elongated protein called myosin.
34. B-cells and T-cells are two types of cells, which of the following are involved?
[A] Innate Immunity
[B] Active immunity
[C] Passive immunity
[D] Acquired immunity
Show Answer
Correct Answer: D [Acquired immunity]
Notes:
Acquired immunity is a type of immunity that develops when a person’s immune system reacts to a foreign substance or microorganism, or that occurs after a person receives antibodies from another source.
35. Which of the following is a layer of Bowman’s capsule?
[A] Outer Parietal layer
[B] Middle Basement membrane
[C] Inner Visceral Layer
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
The outer Parietal layer, Middle Basement membrane, and Inner Visceral Layer are layers of Bowman’s capsule.
36. The bioethanol is subjected to rectification to remove?
[A] Sugar
[B] Enzymes
[C] Yeast
[D] Impurities
Show Answer
Correct Answer: D [Impurities]
Notes:
The bioethanol is subjected to rectification to Remove Impurities. Alcohol is made by microbial fermentation, mostly from carbohydrates produced in sugar- or starchy plants such as corn, sugarcane, sweet sorghum, or lignocellulosic biomass known as bioethanol.
37. Which of the following makes the skin layer impervious to water?
[A] Melanin
[B] Collagen
[C] Keratin
[D] Chitin
Show Answer
Correct Answer: C [Keratin]
Notes:
Keratin is a family of fibrous structural proteins involved in making up the outer layer of human skin. It is also the key structural component of hair and nails. Cells in the epidermis contain a structural matrix of keratin, which makes this outermost layer of the skin almost waterproof, and along with collagen and elastin, gives skin its strength. It also makes up fish scales and crustacean shells, bird feathers and beaks, animal horns and hooves.
38. The vitamin which is very labile and easily destroyed during cooking as well as storage is vitamin ____:
[A] Vitamin D
[B] Vitamin C
[C] Vitamin K
[D] Vitamin B6
Show Answer
Correct Answer: B [Vitamin C]
Notes:
Vitamin C is quite unstable when cooked or stored improperly. It is very liable and easily destroyed during cooking as well as storage. It is a water-soluble and temperature-sensitive vitamin, so is easily degraded during cooking, and elevated temperatures and long cooking times have been found to cause particularly severe losses of vitamin C.
39. In which of the following parts of the human digestive system is the digestion of food completed?
[A] Small intestine
[B] Large intestine
[C] Mouth
[D] Stomach
Show Answer
Correct Answer: A [Small intestine]
Notes:
Small intestine has three parts – duodenum, jejunum, and ileum. The maximum digestion of food takes place in the duodenum. While the digestion of food is completed in jejunum. The maximum absorption of food takes place in ileum.
40. ____ is the branch of zoology concerned with the study of amphibians:
[A] Herpetology
[B] Ethology
[C] Mammology
[D] Morphology
Show Answer
Correct Answer: A [Herpetology]
Notes:
Herpetology is the branch of zoology concerned with the study of amphibians (including frogs, toads, salamanders, newts, and caecilians (gymnophiona)) and reptiles (including snakes, lizards, amphisbaena, turtles, terrapins, tortoises, crocodilians, and the tuataras). It is the study of ectothermic (coldblooded) tetrapods.
