General Science - Biology MCQs
41. Bowman’s Capsule’ works as a part of the functional unit of which among the following human physiological system?
[A] Circulatory System
[B] Respiratory System
[C] Excretory System
[D] Reproductive System
Show Answer
Correct Answer: C [Excretory System]
Notes:
Bowman’s Capsule is related to the process of ‘Ultrafiltration’ in the functional units of kidneys called ‘nephrons’.Therefore, it is a part of the excretory system.
42. Which of the following animals have joint legs?
- Silver fish
- Scorpion
- Crab
- Honey Bee
Select the correct option from the codes given below:
[A] Only 1, 2 & 3
[B] Only 2, 3 & 4
[C] Only 2 & 3
[D] 1, 2, 3 & 4
Show Answer
Correct Answer: D [ 1, 2, 3 & 4]
Notes:
Silverfish or fishmoth, is a small, wingless insect. Rest all are also insects and from Arthyropoda Phylum, so all are correct options.
43. The “Deoxyribose” which is a part of DNA and a constituent of hereditary material is a ___:
[A] Nucleic Acid
[B] Protein
[C] Lipid
[D] Carbohydrate
Show Answer
Correct Answer: D [ Carbohydrate]
Notes:
Deoxyribose is a Monosaccharide sugar.
44. Which among the following enzyme allows the cows to digest cellulose?
[A] beta-lactase
[B] alpha-amylase
[C] beta-amylase
[D] alpha-lactase
Show Answer
Correct Answer: C [ beta-amylase]
Notes:
Correct answer is beta-amylase. Regarding amylase there is an interesting fact that it has proved its role in Human evolution. The salivary amylase levels found in the human lineage are six to eight times higher in humans than in chimpanzees, which are mostly fruit eaters and ingest little starch relative to humans.
45. Consider the following statements with reference to the active and passive immunity against the pathogens:
1. Vaccines provide us passive immunity
2. Passive immunity can be acquired only artificially
Which among the above statements is/ are correct?
[A] Only 1 is correct
[B] Only 2 is correct
[C] Both 1 & 2 are correct
[D] Neither 1 nor 2 is correct
Show Answer
Correct Answer: A [ Only 1 is correct]
Notes:
There are two types of immunity against infectious microorganisms: active immunity and passive immunity. Passive immunity is provided by artificial means such as injections of antibodies and vaccines. The agents used for passive immunity include antibodies from humans or animals Passive immunity can occur naturally, when maternal antibodies are transferred to the foetus through the placenta, and can also be induced artificially, when high levels of human (or horse) antibodies specific for a pathogen or toxin are transferred to non-immune individuals.
46. Gargling with a solution of table salt is known to provide relief for a sore throat because ____ ?
[A] It kills bacteria
[B] It works as analgesic
[C] It dehydrates water from inflammatory tissues by Osmosis
[D] None of the above reasons
Show Answer
Correct Answer: C [ It dehydrates water from inflammatory tissues by Osmosis]
Notes:
Gargling with a solution of table salt is known to provide relief for a sore throat because it dehydrates water from inflammatory tissues by Osmosis. Gargling with salt water helps cure the throat infection.
47. Which of the following is / are the functions of the adipose tissue in human body?
- It serves as a connective tissue
- It stores most of the fat
- It works as an endocrine gland
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3
Show Answer
Correct Answer: D [ 1, 2 & 3]
Notes:
Adipose tissue is a connective tissue modified for storage of fat. The cells are generally large, and are rounded or oval in shape with prominent central vacuoles that push the cytoplasm and the nuclei to the periphery of the cells. Adipose tissue is found between the internal organs and below the skin. The yellow bone marrow is also an example of adipose tissue. adipose tissue has, in recent years, been recognized as a major endocrine organ, as it produces hormones such as leptin, estrogen, resistin, and the cytokine TNF?. In humans, adipose tissue is located beneath the skin (subcutaneous fat), around internal organs (visceral fat), in bone marrow (yellow bone marrow) and in the breast tissue.
48. Which among the following hormone can be used as a drug to treat cardiac arrest and some other cardiac problems?
[A] Thyroxin
[B] Epinephrine
[C] Calcitonin
[D] Insulin
Show Answer
Correct Answer: B [ Epinephrine]
49. Urea is one of the major constituents of Urine in our body. In which among the following organs, Urea is formed?
[A] Kidneys
[B] Urinary Bladder
[C] Urethra
[D] Liver
Show Answer
Correct Answer: D [ Liver]
Notes:
Urea is a nitrogenous waste that is produced in the liver; urine is produced in the kidney. We note here that Uric acid is excreted as a crystal to conserve water by many terrestrial animals. However, humans and earthworms release nitrogenous waste in the form of urea.
50. Which one of the following diseases is locally known as Monkey disease?
[A] Kyasanur forest disease
[B] Japanese Encephalitis
[C] Malaria
[D] Mad cow disease
Show Answer
Correct Answer: A [ Kyasanur forest disease]
Notes:
Kyasanur forest disease (KFD) is a viral hemorrhagic fever endemic to South Asia. The disease was first reported from Kyasanur Forest of Karnataka in India in March 1957. The disease first manifested as an epizootic outbreak among monkeys killing several of them in the year 1957. Hence the disease is also locally known as Monkey Disease or Monkey Fever.
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