31. Urine is formed in the nephron and which of the following steps are involved?
[A] Glomerular Filtration
[B] Tubular Reabsorption
[C] Secretion
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Urine is formed in the nephron and Glomerular Filtration, Tubular Reabsorption, and Secretion steps are involved in it.
32. Which of the following is best maintains intestinal health?
[A] Starches
[B] Vitamins
[C] Fiber
[D] Fat
Show Answer
Correct Answer: C [Fiber]
Notes:
Fiber maintains better intestinal health. Fiber is a type of carbohydrate that the body cannot digest.
33. Consider the following stages of the menstrual cycle:
- Menstruation
- Follicular phase
- Ovulation
- Luteal phase
Which of the following is the correct order of the menstrual cycle stages?
[A] 1, 2, 3, 4
[B] 2, 1, 3, 4
[C] 1, 2, 4, 3
[D] 2, 3, 1, 4
Show Answer
Correct Answer: A [1, 2, 3, 4]
Notes:
The menstrual cycle comprises four stages in a specified order. It begins with Menstruation (shedding of the uterine lining), followed by the Follicular phase (development of follicles in the ovaries), then Ovulation (release of the egg), and finally the Luteal phase (preparation of the uterine lining for potential pregnancy). This order is crucial for the proper functioning and regulation of the menstrual cycle and hormone levels.
34. Which of the following virus is also known as the common cold?
[A] Variola virus
[B] Rhinovirus
[C] Varicella zoster Virus
[D] Myxovirus
Show Answer
Correct Answer: B [Rhinovirus]
Notes:
Rhinovirus is also known as the common cold. This is also called RNA Virus.
35. Which chemical fertilizer is needed for better rhizobial nitrogen fixation?
[A] Phosphorus
[B] Potassium
[C] Calcium
[D] Sodium
Show Answer
Correct Answer: A [Phosphorus]
Notes:
Phosphorus is the essential chemical fertilizer for better rhizobial nitrogen fixation.
36. Which of the following is an enzyme that cleaves proteins?
[A] protease
[B] RNase
[C] lipase
[D] Dnase
Show Answer
Correct Answer: A [protease]
Notes:
Protease is an enzyme that cleaves proteins. These enzymes are made by animals, plants, fungi, and bacteria.
37. Jaws are absent in ____:
[A] Birds
[B] Fishes
[C] Reptiles
[D] Protochordata
Show Answer
Correct Answer: D [Protochordata]
Notes:
Jaws are absent in protochordata and cyclostomata (Agantho stoma). Protochordata refers to invertabrate subphylum of phylum chordata. It includes animals such as tunicates.
38. Which of the following is the smallest bird?
[A] Parrot
[B] Pigeon
[C] Hummingbird
[D] House sparrow
Show Answer
Correct Answer: C [Hummingbird ]
Notes:
Humming birds are birds that comprise the family Trochilidae. They are among the smallest of birds, most species measuring in the 7.5–13 cm (3–5 in) range. Indeed, the smallest extinct bird species is a humming bird, the 5-cm Bee Humming bird. These birds being the smallest are, capable of flying both in forward and back direction.
39. Fermentation is a type of ____ process:
[A] Exothermic Reaction
[B] Aerobic Respiration
[C] Anaerobic Respiration
[D] Transpiration
Show Answer
Correct Answer: C [Anaerobic Respiration]
Notes:
Fermentation in food processing is the process of converting carbohydrates to alcohol or organic acids using microorganisms—yeasts or bacteria—under anaerobic conditions. It also occurs in oxygen-starved muscle cells, as in the case of lactic acid fermentation.
40. DPT vaccine is categorized as which of the following?
[A] Anti viral vaccine
[B] Anti protozoan vaccine
[C] Anti ricket-sial vaccine
[D] A combined vaccine
Show Answer
Correct Answer: D [A combined vaccine]
Notes:
DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. The vaccine components include diphtheria and tetanus toxoids and killed whole cells of the organism that cause pertussis (wP).
