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NEET • BIOLOGY • HUMAN HEALTH AND DISEASES
Human health and diseases practice · Mixed difficulty
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91
Medium
91 of 259
Remembering
+4 | -1
Tunnel vision’ is associated with.
View answer and explanation
Correct option: A
Alcoholism
Option A (Alcoholism) is correct because "tunnel vision," a gradual loss of peripheral vision, is a known symptom associated with chronic alcoholism.
92
Medium
92 of 259
Remembering
+4 | -1
What is haemozoin?
View answer and explanation
Correct option: A
Undigested part of blood in trophozoite of Plasmodium.
Option A (Undigested part of blood in trophozoite of Plasmodium) is correct because hemozoin is a waste product formed from the digestion of blood by the Plasmodium trophozoite within red blood cells.
93
Medium
93 of 259
Understanding
+4 | -1
Which of the following techniques is best for measuring the effectiveness of antibiotics on bacteria?
View answer and explanation
Correct option: B
Chemical testing
Option C (Biological testing) is correct because it directly assesses the antibiotic's effect on bacterial growth and survival, such as through measuring zones of inhibition.
94
Medium
94 of 259
Remembering
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Benign tumors:
View answer and explanation
Correct option: C
Remain confined to their original location
Option C (Remain confined to their original location) is correct because benign tumors do not metastasize and stay localized.
95
Easy
95 of 259
Remembering
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Which of the following is not a part of secondary lymphatic system?
View answer and explanation
Correct option: D
Thymus
Option D (Thymus) is correct because the thymus is a primary lymphoid organ, while the spleen, lymph nodes, and tonsils are secondary lymphoid organs.
96
Medium
96 of 259
Remembering
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Mention the ‘Incubation Period’ of Plasmodium vivax.
View answer and explanation
Correct option: A
10-14 days
Option A (10-14 days) is correct because the incubation period of Plasmodium vivax, the parasite that causes malaria, is typically between 10 and 14 days.
97
Hard
97 of 259
Understanding
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Assertion (A): T-lymphocytes mediate CMI response.
Reason (R): The above response makes it easy to transplant organs.
Reason (R): The above response makes it easy to transplant organs.
View answer and explanation
Correct option: C
If assertion is true but reason is false
Option C is correct. T-lymphocytes do mediate CMI response, but this response makes organ transplantation more difficult, not easier.
98
Medium
98 of 259
Analyzing
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Examination of blood of a person suspected of having anaemia, shows large, immature, nucleated erythrocytes without haemoglobin. Supplementing his diet with which of the following, is likely to alleviate his symptoms?
View answer and explanation
Correct option: D
Iron compounds
Option D is correct because the symptoms (large, immature erythrocytes without hemoglobin) indicate iron deficiency anemia, which can be alleviated by supplementing with iron compounds.
99
Hard
99 of 259
Understanding
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“CAUTION” is a useful mnemonic for common signs and
symptoms of cancer. It does not include
I. Change in bowel or bladder habits.
II. A sore that does not heal.
III. Unusual bleeding or discharge.
IV. Thickening or lump in breast, testicles, or elsewhere.
V. Obvious change in the size, color, shape or thickness of a
wart, mole, or mouth sore.
VII. Nagging cough or hoarseness.
symptoms of cancer. It does not include
I. Change in bowel or bladder habits.
II. A sore that does not heal.
III. Unusual bleeding or discharge.
IV. Thickening or lump in breast, testicles, or elsewhere.
V. Obvious change in the size, color, shape or thickness of a
wart, mole, or mouth sore.
VII. Nagging cough or hoarseness.
View answer and explanation
Correct option: D
It includes all of these
Option D (It includes all of these) is correct because all the listed items are part of the CAUTION mnemonic for common signs and symptoms of cancer.
100
Medium
100 of 259
Remembering
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Note the following words.
I. Skin II. Phagocytes
III.B-cells IV. Inflammation
V. Antibodies VI. T-cells
VII. Fever VIII. Antimicrobial proteins
IX. NK-cells X. Secretions
Identify the factors involved in second line of defence.
I. Skin II. Phagocytes
III.B-cells IV. Inflammation
V. Antibodies VI. T-cells
VII. Fever VIII. Antimicrobial proteins
IX. NK-cells X. Secretions
Identify the factors involved in second line of defence.
View answer and explanation
Correct option: A
II, IV, VII and IX
Option A (II, IV, VII and IX) is correct because phagocytes, inflammation, fever, and NK-cells are all part of the second line of defense (innate immunity).
101
Medium
101 of 259
Remembering
+4 | -1
Heroin is a
View answer and explanation
Correct option: A
Diacetyl morphine
Option A (Diacetyl morphine) is correct because heroin is chemically known as diacetylmorphine, a derivative of morphine.
102
Medium
102 of 259
Analyzing
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Study the following sentences.
I. The cells of malignant tumours divide erratically.
II. They are malignant tumours of epithelial cells.
III. They are malignant tumours of organs that originate from mesoderm.
IV. These tumours are found in organs such as spleen and lymph nodes.
Which of the above are true for angiosarcoma?
I. The cells of malignant tumours divide erratically.
II. They are malignant tumours of epithelial cells.
III. They are malignant tumours of organs that originate from mesoderm.
IV. These tumours are found in organs such as spleen and lymph nodes.
Which of the above are true for angiosarcoma?
View answer and explanation
Correct option: C
I and III
Option C (I and III) is correct because angiosarcomas are malignant tumors that divide erratically and originate from mesodermal tissues.
103
Easy
103 of 259
Understanding
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Antivenom produced at ‘Hoffkine Corporation’, Parel, Mumbai is effective against snake bites and well demonstrated that it saved thousands of people every year. The intravenous administration of the antivenom comes under
View answer and explanation
Correct option: D
Artificial passive acquired immunity
Option D (Artificial passive acquired immunity) is correct because antivenom provides pre-formed antibodies, offering immediate but temporary protection.
104
Hard
104 of 259
Understanding
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Assertion (A): Innate immunity is non specific defence.
Reason (R): It consists of four types of barriers.
Reason (R): It consists of four types of barriers.
View answer and explanation
Correct option: B
If both assertion and reason or true but reason is not the correct explanation of the assertion
Option B (If both assertion and reason are true but reason is not the correct explanation of the assertion) is correct because innate immunity is indeed non-specific, and it does consist of barriers, but the barriers are not the reason for its non-specificity.
105
Medium
105 of 259
Remembering
+4 | -1
In which year, Ronald Ross found malaria parasite infection in mosquito?
View answer and explanation
Correct option: A
1897
Option A (1897) is correct because Ronald Ross discovered the malarial parasite in mosquitoes in 1897.
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106
Medium
106 of 259
Remembering
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Sir Godfery Hounsfield developed the diagnostic technique of
View answer and explanation
Correct option: A
CT scanning
Option A is correct. Sir Godfrey Hounsfield developed the diagnostic technique of CT scanning.
107
Easy
107 of 259
Analyzing
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Identify the odd one from the diseases given below
View answer and explanation
Correct option: D
Ringworm
Option D is correct because Ringworm is a fungal infection, while the others are vector-borne diseases.
108
Medium
108 of 259
Remembering
+4 | -1
The exaggerated response of the immune system to certain antigens is called
View answer and explanation
Correct option: D
Allergy
Option D (Allergy) is correct because allergy is defined as an exaggerated immune response to certain antigens.
109
Medium
109 of 259
Remembering
+4 | -1
Inflammatory response in allergy is caused by the release of:
View answer and explanation
Correct option: C
Histamines
Option C (Histamines) is correct because histamines are the primary mediators of the inflammatory response in allergies.
110
Hard
110 of 259
Remembering
+4 | -1
The causative agent of mad-cow disease is a
View answer and explanation
Correct option: B
Prion
Option B (Prion) is correct because mad-cow disease (Bovine Spongiform Encephalopathy) is caused by prions, which are misfolded proteins.
111
Hard
111 of 259
Understanding
+4 | -1
Assertion: Tranquillizers are called
antipsychosis drug.
Reason: Tranquillizers are used to treat psychosis.
antipsychosis drug.
Reason: Tranquillizers are used to treat psychosis.
View answer and explanation
Correct option: A
If both Assertion and Reason are true and
Reason is the correct explanation of Assertion
Reason is the correct explanation of Assertion
Option A is correct because Tranquilizers are indeed called antipsychotic drugs, and they are used to treat psychosis.
112
Easy
112 of 259
Understanding
+4 | -1
Infection of pneumonia occurs due to
View answer and explanation
Correct option: D
All of the above
Option D (All of the above) is correct because pneumonia can spread through droplets, inhalation, and contaminated objects.
113
Easy
113 of 259
Remembering
+4 | -1
The agents which cause allergy are known as:
View answer and explanation
Correct option: A
Allergens
Option A (Allergens) is correct because allergens are the specific agents that trigger allergic reactions.
114
Hard
114 of 259
Understanding
+4 | -1
Which of the following act as an antigen, but do not induce antibody production?
View answer and explanation
Correct option: C
Haptens
Option C (Haptens) is correct because haptens are small molecules that can act as antigens but require a carrier molecule to induce antibody production.
115
Easy
115 of 259
Remembering
+4 | -1
Cocaine is obtained from
View answer and explanation
Correct option: A
Erythroxylum coca
Option A (Erythroxylum coca) is correct because cocaine is extracted from the leaves of the Erythroxylum coca plant.
116
Medium
116 of 259
Understanding
+4 | -1
The progenitors that are formed in bone marrow and differentiated elsewhere are
View answer and explanation
Correct option: C
Pre T-cells
Option C (Pre T-cells) is correct because T-cell progenitors originate in the bone marrow but migrate to the thymus for maturation.
117
Medium
117 of 259
Analyzing
+4 | -1
A patient is suffering from abdominal pain cramps, constipation, excess mucous & blood in stool, Which of the following parasite may be found in stool examination?
View answer and explanation
Correct option: D
Entamoeba histolytica
Option D is correct because the symptoms (abdominal pain, cramps, constipation, excess mucous & blood in stool) are indicative of Entamoeba histolytica infection.
118
Medium
118 of 259
Remembering
+4 | -1
What is true about T-lymphocytes is mammals?
View answer and explanation
Correct option: C
There are three main types-cyctotoxic T-cells, helper T-cells and suppressor T-cells
Option C (There are three main types-cyctotoxic T-cells, helper T-cells and suppressor T-cells) is correct because T-lymphocytes are classified into cytotoxic T-cells (killer T-cells), helper T-cells, and suppressor T-cells, each with distinct functions in the immune response.
119
Easy
119 of 259
Remembering
+4 | -1
In which of the following diseases, Aedes mosquito acts as vector/carrier?
View answer and explanation
Correct option: B
Dengue and chikungunya
Option B (Dengue and chikungunya) is correct because Aedes mosquitoes are the primary vectors for both dengue and chikungunya viruses.
120
Medium
120 of 259
Remembering
+4 | -1
Largest single mass of lymphatic tissue in the body is
View answer and explanation
Correct option: B
Spleen
Option B (Spleen) is correct because the spleen is the largest single mass of lymphatic tissue in the body, playing a crucial role in filtering blood and housing immune cells.
Revision notes and key takeaways
Review HUMAN HEALTH AND DISEASES in your textbook or class notes, then use this set to check your understanding.
Showing 91-120 of 259 questions