31. Monocytes differentiate into which kind of phagocytic cells?
[A] Neutrophil
[B] B cell
[C] Macrophage
[D] T cell
Show Answer
Correct Answer: C [Macrophage]
Notes:
Macrophages are specialized cells that are involved in the detection, phagocytosis, and destruction of bacteria and other harmful organisms. A monocyte is a type of white blood cell and it is a phagocyte.
32. Which of the following does not correct about diabetes?
[A] Diabetes insipidus is due to secretion of low levels of ADH.
[B] Diabetes mellitus is due to hyper-production of insulin.
[C] Without insulin, glucose remains in the bloodstream.
[D] All of the above
Show Answer
Correct Answer: B [Diabetes mellitus is due to hyper-production of insulin.]
Notes:
Diabetes is a disease that occurs when your blood glucose, also known as blood sugar, is too high.
33. What is the scrotal ligament?
[A] an accessory reproductive gland in male mammals
[B] elastic tissue which connects the cauda epididymis to the scrotal sac
[C] remnant of gubernaculum in a fetus
[D] None of these
Show Answer
Correct Answer: C [remnant of gubernaculum in a fetus]
Notes:
A scrotal ligament is the remnant of the gubernaculum in a fetus. It secures the testis to the most inferior portion of the scrotum.
34. Which bacteria is responsible for causing Shipping Fever in cattle?
[A] Pasteurella haemolytica
[B] Pasteurella multocida
[C] Mannheimia haemolytica
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Shipping fever in cattle is a complex respiratory disease caused by Pasteurella haemolytica, Pasteurella multocida, and Mannheimia haemolytica. These bacteria are often normal inhabitants of the respiratory system but can become pathogenic under certain circumstances, such as the stress of transportation, hence the name “Shipping fever”. It is an important disease in the field of veterinary medicine, especially in beef cattle, due to its economic impact.
35. What disease is caused by paramyxovirus?
[A] measles
[B] parainfluenza virus
[C] respiratory syncytial virus
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Measles, mumps, croup, parainfluenza virus, and respiratory syncytial virus are caused by a paramyxovirus.
36. Which of the following is an example of a loose association of nitrogen-fixing bacteria?
[A] Rhizobium
[B] Blue-Green algae
[C] Azotobacter
[D] Azospirillum
Show Answer
Correct Answer: D [Azospirillum]
Notes:
Azospirillum is an example of a loose association of nitrogen-fixing bacteria. Azotobacter is an example of Free-Living Nitrogen-Fixing Bacteria. Rhizobium is an example of Symbiotic Nitrogen-Fixing Bacteria. Blue-Green alga is an example of Symbiotic Nitrogen-Fixing Cyanobacteria.
37. The technique of __ crosses the limits of conventional hybridization processes.
[A] immunology
[B] modern hybridization
[C] genetic engineering
[D] cell biology
Show Answer
Correct Answer: C [genetic engineering]
Notes:
The technique of genetic engineering crosses the limits of conventional hybridization processes.
38. What is another name of rDNA technology?
[A] chimeric DNA
[B] information technology
[C] information DNA
[D] chimeric technology
Show Answer
Correct Answer: A [chimeric DNA]
Notes:
chimeric DNA is another name of rDNA technology because it can be made of material from two different species, like mythological imagery. R-DNA technology uses palindromic sequences and leads to the production of sticky and blunt ends.
39. What is Blubber?
[A] A layer of thick fat
[B] A device to trap insects by some aquatic
[C] A milky secretion of rubber plant
[D] Fungal infection of rice plants
Show Answer
Correct Answer: A [A layer of thick fat]
Notes:
Blubber is a thick layer of vascularized adipose tissue found under the skin particularly whales inhabiting of Arctic ocean. It’s presence insulate their body from ice cold. The energy stored in blubber includes both proteins (mostly collagen) and fats (mostly lipids). Blubber covers the entire body of animals such as seals, whales, and walruses—except for their fins, flippers, and flukes. Whaling largely targeted the collection of blubber: whalers rendered it into oil in try pots, or later, in vats on factory ships. The oil could serve in the manufacture of soap, leather, and cosmetics. Whale oil was used in candles as wax, and in oil lamps as fuel.
40. The radioactive Strontium-90 causes _____:
[A] Lung cancer
[B] Skin cancer
[C] Bone cancer
[D] Brain cancer
Show Answer
Correct Answer: B [Skin cancer]
Notes:
Strontium-90 is a radioactive isotope of strontium produced by nuclear fission. Used mostly in weapons and nuclear power plants, poisoning usually occurs through accidental ingestion. Studies have also linked strontium-90 to various forms of skin cancer.
