31. Which is also known as the master gland of our body?
[A] Pineal gland
[B] Thyroid gland
[C] Adrenal gland
[D] Pituitary gland
Show Answer
Correct Answer: D [Pituitary gland]
Notes:
The pituitary gland is also known as the master gland of the human body. It is one of the smallest glands of the human body and it secretes the most number hormones in the body.
32. A condition in which one or both of the testes fail to descend from the abdomen into the scrotum called __
[A] Vasectomy
[B] Phimosis
[C] Cryptorchidism
[D] None of these
Show Answer
Correct Answer: C [Cryptorchidism]
Notes:
A condition in which one or both of the testes fail to descend from the abdomen into the scrotum is called Cryptorchidism.
33. Which of the following is used as a tool to insert genes into bacteria to stimulate the production of therapeutic proteins such as human insulin?
[A] Plasmid
[B] Nitrogenous base
[C] Bacteria
[D] RNA
Show Answer
Correct Answer: A [Plasmid]
Notes:
A plasmid is used as a tool to insert genes into bacteria to stimulate the production of therapeutic proteins such as human insulin.
34. The molecule which dissolves in water is called __
[A] hydrophilic molecule
[B] hydrophobic molecule
[C] soluble molecule
[D] insoluble molecule
Show Answer
Correct Answer: A [hydrophilic molecule]
Notes:
A molecule whose interaction with water and other polar substances is more thermodynamically favorable than their interaction with oil or other hydrophobic solvents is called a hydrophilic molecule.
35. Which of the following prevents bleeding of gums?
[A] Nicotinamide
[B] Ascorbic acid
[C] Thiamine
[D] Vitamin B
Show Answer
Correct Answer: B [Ascorbic acid]
Notes:
Vitamin C (Ascorbic acid) cures scurvy, which can cause abnormal gum bleeding. Excellent sources include citrus fruits such as oranges, lemons, limes, and grapefruits. Researchers examined 15 published studies involving 1,140 healthy people as well as data on 8,210 people from the CDC’s Health and Nutrition Examination Survey. They found that low vitamin C levels in the bloodstream were associated with an increased risk for gum bleeding with gentle probing.
36. In male sharks, Claspers are found attached to
____:
[A] Anal fin
[B] Ventral fin
[C] Pectoral fin
[D] Pelvic fin
Show Answer
Correct Answer: D [Pelvic fin]
Notes:
Claspers are organs found in male elasmobranchs. Each male has two claspers. They are located along the inner side of the shark or ray’s pelvic fin and are used in reproduction. During mating, the male deposits his sperm into the female’s cloaca (the opening that serves as the entrance to the uterus, intestine and urinary tract) via grooves that lie in the upper side of the claspers.
37. Which among the following disease is NOT caused by viruses?
[A] Polio
[B] Chicken Pox
[C] Typhoid
[D] Influenza
Show Answer
Correct Answer: C [Typhoid]
Notes:
Typhoid fever, also known simply as typhoid, is a bacterial infection due to Salmonella typhi, also known as Salmonella enterica serotype typhi, that grows in the intestines and blood. Typhoid is spread by eating or drinking food or water contaminated with the feces of an infected person.
38. In a humans heart the bicuspid valve is situated between ____:
[A] Right auricle and right ventricle
[B] Postcaval and auricle
[C] Left auricle and left ventricle
[D] Right ventricle and pulmonary aorta
Show Answer
Correct Answer: C [Left auricle and left ventricle]
Notes:
Bicuspid valve is located between the left atrium and left ventricle. The mitral valve is also called the bicuspid valve because it contains two leaflets or cusps. It is on the left side of the heart and allows the blood to flow from the left atrium into the left ventricle.
39. The average life span of red blood corpuscles is about ____:
[A] 100 – 120 days
[B] 100 – 200 days
[C] 160 – 180 days
[D] 150 – 200 days
Show Answer
Correct Answer: A [100 – 120 days]
Notes:
The red blood cells develop in the bone marrow and circulate for about 100–120 days in the body before their components are recycled by macrophages in liver and spleen (Grave yard of RBC). The old, worn out and dead RBC are destroyed mainly in an organ called spleen.
40. Which of the following are flowerless plants that produce cones and seeds in which seeds are not encased within an ovary?
[A] Hydrophytes
[B] Bryophytes
[C] Gymnosperms
[D] Angiosperms
Show Answer
Correct Answer: C [Gymnosperms]
Notes:
Gymnosperm are flowerless plant that produces cones and seeds. The term gymnosperm literally means “naked seed”, as gymnosperm seed are not encased within an ovary. Rather they sit exposed on the surface of the leaf like structures called bracts.
