31. What are some of the common disorders caused by a poor immune system?
[A] Epidemic Diseases
[B] Deficiency diseases
[C] Autoimmune diseases
[D] None of the above
Show Answer
Correct Answer: A [Epidemic Diseases]
Notes:
A disease that affects a large number of people within a community, population, or region is called Epidemic Disease.
32. Which does not act as a protective barrier for the surface of the body?
[A] Skin
[B] Mucus
[C] Gastric acid
[D] Salivary amylase
Show Answer
Correct Answer: D [Salivary amylase]
Notes:
Salivary amylase does not act as a protective barrier for the surface of the body.
33. 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.
34. Which of the following is the place of development of the embryo?
[A] Uterus
[B] Fallopian tubes
[C] A pair of ovaries
[D] Vagina
Show Answer
Correct Answer: A [Uterus]
Notes:
The uterus is the place of development of the embryo. This is a hollow muscular organ located in the female pelvis between the bladder and rectum.
35. Chickenpox is a highly contagious disease caused by the __
[A] Pasteurella pestis
[B] Bacillus anthracis
[C] Bordetella pertussis
[D] Varicella zoster
Show Answer
Correct Answer: D [Varicella zoster ]
Notes:
Chickenpox is a highly contagious disease caused by the varicella zoster virus.
36. Which property is not exhibited by a disease-causing pathogen?
[A] Invasiveness
[B] Toxigenicity
[C] Virulence
[D] Co-operation
Show Answer
Correct Answer: C [Virulence]
Notes:
Cooperation is a property that is not exhibited by pathogens. Whereas The invasion of a pathogen is the ability of a host to gain entry and multiply. A virus is the ability of a pathogen to cause disease. Toxicity is the power of a pathogen to form toxins capable of harming host cells.
37. Which of the following is known as the “Father of Genetics”?
[A] Morgan
[B] Mendel
[C] Watson
[D] Bateson
Show Answer
Correct Answer: B [Mendel]
Notes:
Mendel is known as the “Father of Genetics”.
38. The part of the stem where a leaf arises is known as ___:
[A] Carpel
[B] Bud
[C] Node
[D] Tuber
Show Answer
Correct Answer: C [Node]
Notes:
The leaves arise in the regions of the plant known as the plant nodes and are therefore the point of attachment of the leaves. The region of the plant between two nodes is known as the internode. The angle between the upper surface of the leaf and the stem from which it arises is known as the axil.
39. Which of the following vitamins are water soluble?
[A] Vitamin A and Vitamin B
[B] Vitamin B and Vitamin C
[C] Vitamin C and Vitamin D
[D] Vitamin A and Vitamin D
Show Answer
Correct Answer: B [Vitamin B and Vitamin C]
Notes:
Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C).The fat soluble vitamins are soluble in lipids (fats); water-soluble vitamins are those that dissolve in water upon entering the body. Because of this, our body cannot store excess amounts of water-soluble vitamins for later use.
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.
