31. Which bone protects the brain?
[A] Calcium
[B] The cranium
[C] The cerebrum
[D] The cerebellum
Show Answer
Correct Answer: B [The cranium]
Notes:
The cranium, or skull, protects the delicate brain from damage. Unless the cerebrum is damaged, the ability to speak, see and remember should remain mostly intact.
32. Which statement is true about Passive Immunity?
[A] This immunity causes reactions
[B] This immunity develops immediately
[C] This immunity lasts only for a few weeks or months
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Passive immunity is conferred when a person is given antibodies to a disease rather than produced through their own immune system. A newborn baby receives passive immunity from its mother through the placenta.
33. On average, how many liters of urine does a normal adult excrete per day?
[A] 1 to 1.5 L
[B] 2 to 2.5 L
[C] 3 to 3.5 L
[D] 5 to 5.5 L
Show Answer
Correct Answer: A [1 to 1.5 L]
Notes:
On average, a normal adult excretes 1 to 1.5 L liters of urine per day.
34. In patients with hemophilia, which of these can increase the risk of cerebral microbleeds?
[A] cardiovascular risk factors
[B] increased age
[C] Hepatitis C infection
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
In patients with hemophilia, cardiovascular risk factors, age, and hepatitis C infection may increase the risk of cerebral microbleeds.
35. Which of the following is VAM?
[A] Bioinsecticide
[B] Bioherbicide
[C] Endomycorrhiza
[D] Ectomycorrhiza
Show Answer
Correct Answer: C [Endomycorrhiza]
Notes:
VAM is Vesicular Arbuscular Mycorrhizal. It is formed by the symbiotic association between certain phycomycetous fungi and angiosperm roots.
36. The method that silencing specific mRNA due to the binding of complementary dsRNA is called?
[A] Electrophoresis
[B] RNAi
[C] rDNA technology
[D] DNAi
Show Answer
Correct Answer: B [RNAi]
Notes:
The method that silencing specific mRNA due to the binding of complementary dsRNA is called RNAi.
37. Which one of the following features is absent in a virus?
[A] Presence of cell wall
[B] Reproduce within host cell
[C] Fully parasitic in nature
[D] Presence of either DNA or RNA
Show Answer
Correct Answer: A [Presence of cell wall]
Notes:
A virus has a simple structure. It has no internal cellular structure, no cell wall or cell membrane, just the protein coat that holds the string of nucleic acid. It is made only of a nucleic acid + a protein coat. A cell wall is a layer located outside the cell membrane found in plants, fungi, bacteria, algae, and archaea.
38. The type of kidneys present in frog are ___:
[A] Metanephros
[B] Pronephros
[C] Archinephros
[D] Mesonephros
Show Answer
Correct Answer: D [Mesonephros]
Notes:
In the frog, Mesonephros is the functional kidney in embryonic as well as adult stage and mesonephric duct functions as both urinary and genital duct. Tubules of the anterior region of kidney get connected to testis to collect spermatozoa, while the posterior region remains as functional kidney and transports urinary wastes to the exterior.
39. The vector of disease sleeping sickness is ____:
[A] Sand fly
[B] House fly
[C] Fruit fly
[D] Tsetse fly
Show Answer
Correct Answer: D [Tsetse fly]
Notes:
Human African trypanosomiasis, sleeping sickness, African lethargy, or Congo trypanosomiasis is a parasitic disease of people and animals, caused by protozoa of the species Trypanosoma brucei and transmitted by the tsetse fly. The tsetse fly is a large, brown, biting fly that serves as both a host and vector for the trypanosome parasites.
40. Stethoscope works on which principle?
[A] Reflection of sound
[B] Reflection of light
[C] Conversion of current into sound
[D] Conversion of sound into current
Show Answer
Correct Answer: A [Reflection of sound]
Notes:
The stethoscope is an acoustic medical device listening to the internal sounds of an animal or human body. It typically has a small disc-shaped resonator that is placed against the chest, and two tubes connected to earpieces. Working of a stethoscope is based on reflection of sound. In a stethoscope, the sound of the patient’s heartbeat reaches the doctor’s ear by multiple reflections of sound.
