31. Which of the following is located at the junction with the bladder composed of smooth involuntary muscle?
[A] Urethra
[B] Internal Urethral sphincters
[C] External Urethral Sphincters
[D] Bladder
Show Answer
Correct Answer: B [Internal Urethral sphincters]
Notes:
The internal urethral sphincter is a muscle that constricts the internal urethral orifice. It is made up of smooth muscle so it is involuntary.
32. What hormones do the parathyroid gland produce?
[A] thyroid hormones
[B] parathormone
[C] prolactin
[D] All of the above
Show Answer
Correct Answer: B [parathormone]
Notes:
The parathyroid glands secrete parathyroid hormone or parathormone. The parathyroid glands are two pairs of small, oval-shaped glands.
33. A tube that allows urine to pass out of the body __
[A] penis
[B] urethra
[C] scrotum
[D] All of the above
Show Answer
Correct Answer: B [urethra]
Notes:
A tube that allows urine to pass out of the body’s urethra. It is a long tube that runs through the penis.
34. Which of the following female reproductive organs produces female gametes?
[A] Ovaries
[B] Uterus
[C] Fallopian tubes
[D] Vagina
Show Answer
Correct Answer: A [Ovaries]
Notes:
Ovaries are the female reproductive organs that produce female gametes. It is also responsible for producing various hormones.
35. 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.
36. Which word is common in the botanical names of trees like Ashoka, Tamarind or Coral?
[A] Terminalia
[B] Indica
[C] Salix
[D] Acacia
Show Answer
Correct Answer: B [Indica]
Notes:
Tamarind tree (Tamarindus indica), Ashoka tree (Saraca Indica), Indian Coral tree (Erythrina Indica) have ‘Indica’ common in their botanical names. In biology/taxonomy, if a species originates in India, its scientific name sometimes includes “Indica”.
37. Which one of the following is not a true fish?
[A] Jellyfish
[B] Starfish
[C] Cuttlefish
[D] All of the above
Show Answer
Correct Answer: D [All of the above ]
Notes:
The term fish is most strictly used to describe any animal with a backbone that has gills throughout life and has limbs, if any, in the shape of fins. Many types of aquatic animals commonly referred to as fish are not fish in this strict sense; examples include shellfish, cuttlefish, starfish, crayfish and jellyfish.
38. The deficiency of which nutrient causes night blindness?
[A] Vitamin A
[B] Vitamin C
[C] Vitamin K
[D] Proteins
Show Answer
Correct Answer: A [Vitamin A]
Notes:
Night blindness, also called nyctalopia, is failure of the eye to adapt promptly from light to darkness that is characterized by a reduced ability to see in dim light or at night. It occurs as a symptom of numerous congenital and inherited retinal diseases or as a result of vitamin A deficiency.
39. The blotting technique used to identify the isolated protein is _____:
[A] Western blotting
[B] Northern blotting
[C] Southern blotting
[D] Cloning
Show Answer
Correct Answer: A [Western blotting]
Notes:
Protein electrophoresis and Western blotting are both methods used to identify specific proteins in a sample or solution. Western blotting, also known as immunoblotting or protein blotting, is a core technique in cell and molecular biology. It is used to detect the presence of a specific protein in a complex mixture extracted from cells.
40. Oxygenated blood is carried by _____:
[A] Hepatic portal vein
[B] Renal vein
[C] Pulmonary artery
[D] Pulmonary vein
Show Answer
Correct Answer: D [Pulmonary vein]
Notes:
The pulmonary veins drain oxygenated blood from the lungs to the left atrium. A small amount of blood is also drained from the lungs by the bronchial veins. There are typically four pulmonary veins, two draining each lung. The pulmonary veins are part of the pulmonary circulation.
