Human Health And Disease — DPP 3

20 NEET questions from Human Health And Disease, with answers and explanations. Attempt it as a timed test to get scoring, accuracy breakdown and mistake tracking.

Attempt this test free 20 questions · 30 minutes · +80 marks
1
Which of the following options describes the term 'health' most correctly?
  1. A Absence of disease
  2. B Physical fitness
  3. C Absence of disease alongwith physical fitness
  4. D A state of complete physical, mental and social well being
Show answer & explanation

Correct answer: D

Health is a state of complete physical, mental and social well-being.
2
If a person is infected with deadly pathogen/toxin against which quick immune response is required, readymade antibodies are directly given to protect that person based on principle of passive immunity. Select the option that does not represent a case of passive immunity.
  1. A Administration of anti-venin against snakebite
  2. B Administration of anti-tetanus serum
  3. C Administration of tetanus toxoid to newly born
  4. D Passage of IgG across placenta from mother to foetus
Show answer & explanation

Correct answer: C

ATS against tetanus, antivenin against snakebites contain readymade antibodies.
Injecting tetanus toxoid triggers active immunity.
3
Cancer is caused by
  1. A Rupturing of cells
  2. B Uncontrolled meiosis
  3. C Uncontrolled mitosis
  4. D Loss of immunity of the cells
Show answer & explanation

Correct answer: C

Cancerous cells undergo abnormal and uncontrolled division of cells due to breakdown of regulatory mechanism.
Cancer cells do not show the property of contact inhibition (cells when in contact with each other inhibit their uncontrolled growth)
Cells are not rupturing.
Meiosis is reduction division
Cells do not lose immunity, they combine to form tumors.
4
Among the non-infectious diseases, which of the following is most common fatal disease of human beings?
  1. A AIDS
  2. B Cancer
  3. C Cystic fibrosis
  4. D Cholera
Show answer & explanation

Correct answer: B

AIDS- Communicable/infectious disease and fatal disease.
Cystic fibrosis- It is a genetic disorder.
Cholera- Communicable disease but not fatal.
5
Oncogene is another name for
  1. A Inducer gene
  2. B Jumping gene
  3. C Structural gene
  4. D Cancer causing gene
Show answer & explanation

Correct answer: D

Cellular oncogenes (c-onc) or proto-oncogenes have been identified in normal cells, which when activated under certain conditions, could lead to oncogenic transformation of the cells.
Cancer causing virus called oncogenic virus have genes called viral oncogenes.
Inducer gene: A molecule that regulate gene expression.
Jumping genes: Genes that can change their position within the genome.
Structural gene: Genes that codes for any RNA or protein product other than a regulatory protein.
6
The pathogen transmitted through female mosquito causing chronic inflammation of the lymphatic vessels of the lower limbs in man is
  1. A Ascaris sp.
  2. B E. histolytica
  3. C Streptococcus pneumoniae
  4. D Wuchereria malayi
Show answer & explanation

Correct answer: D

Ascaris causes ascariasis, E.histolytica cause amoebiasis, Streptococcus pneumoniae causes pneumonia. Wuchereria causes elephantiasis/filariasis which is a chronic inflammation of the lymphatic vessels of lower limb.
7
Blood cells involved in inflammatory reactions in response to pollen are
  1. A Basophils
  2. B Neutrophils
  3. C Eosinophils
  4. D Monocytes
Show answer & explanation

Correct answer: A

Basophils: They release histamine and are found in tissues where allergic reactions are occurring and contribute to the severity of these reactions.
Neutrophils: Are phagocytic cells.
Eosinophils: Are important mediator in allergic responses and their number increase in allergic conditions.
Monocyte: At site of infection it differentiates into macrophage to elicit an immune response.
8
Identify the steps A, B, C and D in given figure representing the mode of action of AIDS virus. Match the labelling in column I with column II.
Human Health And Disease – NEET-10815
Choose the correct option.
  1. A a(i), b(ii), c(iii), d(iv)
  2. B a(ii), b(iii), c(iv), d(i)
  3. C a(iii), b(iv), c(i), d(ii)
  4. D a(iv), b(i), c(ii), d(iii)
Show answer & explanation

Correct answer: B

AIDS is caused by HIV, a retrovirus, which replicates in the human body. Viral DNA is produced by reverse transcriptase.
9
Appearance of dry, scaly lesions on various body parts such as nails and scalp accompanied by intense itching are the main symptoms of
  1. A Ringworm
  2. B Elephantiasis
  3. C Filariasis
  4. D Tetanus
Show answer & explanation

Correct answer: A

Ringworm infection is caused by fungi such as Trichophyton, Epidermophyton & Microsporum.
10
Read the following statements
a. Heroin, commonly called smack, is obtained by acetylation of morphine.
b. Cocaine is obtained from the latex of Papaver somniferum.
c. Dopamine is always an excitatory neurotransmitter.
d. Morphine is an effective sedative and pain killer.
Mark the option which includes only correct statement
  1. A a & b
  2. B b & c
  3. C c & d
  4. D a & d
Show answer & explanation

Correct answer: A

Hallucinogens change one's behaviour, thoughts, feelings and perceptions without any actual sensory stimulus.
Sedative: Barbiturate and benzodiazepines - Depress brain activity and produce feelings of calmness, relaxation, drowsiness and deep sleep.
Stimulant: Caffeine, cocaine, amphetamines- Stimulate nervous system, increases alertness, produce excitement.
Tranquilisers: Benzodiazepines- Act as anti-depressants.
11
Recently chikungunya and dengue cases were reported from various parts of the country. Choose the correct vector responsible for these diseases
  1. A Female Anopheles
  2. B Male Aedes
  3. C Female Culex
  4. D Female Aedes
Show answer & explanation

Correct answer: D

Female Culex - Vector of Wuchereria bancrofti which causes elephantiasis.
Female Anopheles - Vector of Plasmodium which causes malaria.
12
Select the incorrect match with respect to the drug, source and its action.
  1. A
  2. B
  3. C
  4. D
Show answer & explanation

Correct answer: C

Human Health And Disease – NEET-10938 Coke is modified form of cocaine.
13
The causative organism of AIDS spreads by
  1. A Sharing infected needles and syringes
  2. B Transfusion of infected blood
  3. C Unsafe sexual relationships
  4. D All of these
Show answer & explanation

Correct answer: D

AIDS is a fatal communicable/infectious disease.
14
A useful drug that damages gastric mucosa if taken along with alcohol is
  1. A Valium
  2. B Antihistamine
  3. C Aspirin
  4. D Morphine
Show answer & explanation

Correct answer: C

Aspirin which inhibits cyclooxyenase affects mucosal barrier function.
15
The letter T in T lymphocyte refers to
  1. A Thymus
  2. B Thyroid
  3. C Thalamus
  4. D Tonsil
Show answer & explanation

Correct answer: A

T-lymphocytes mature in thymus.
Thyroid: It is an endocrine gland and it produces hormone $\mathrm { T } _ { 3 } \& \mathrm {~T} _ { 4 }$.
Thalamus: It is situated between cerebral cortex and midbrain. This acts as a relay organ.
Tonsil: Lymphoid tissue.
16
Antigen binding site in an antibody is formed by
  1. A Two light chains
  2. B Two heavy chains
  3. C One heavy and one light chain
  4. D Either between two light chains or between one heavy and one light chain depending upon the nature of antigen
Show answer & explanation

Correct answer: C

Antigen binding site is constituted by variable region of light chain and heavy chain.
17
One of the inflammatory reaction induced by histamine is
  1. A Vasoconstriction of blood vessels
  2. B Vasodilation of blood vessels
  3. C Decreased vascular permeability
  4. D Accelerated blood clotting
Show answer & explanation

Correct answer: B

Presence of histamine in blood causes vasodilation of blood vessels which leads to a decrease in blood pressure drastically often resulting into death.
Histamine increases the permeability of the blood vessels.
18
A disease contracted through wounds, accidents and improperly sterilised surgical instruments is
  1. A Tetanus
  2. B Gonorrhoea
  3. C Mumps
  4. D Amoebiasis
Show answer & explanation

Correct answer: A

Clostridium tetani is causative agent of tetanus in infected people.
19
The regression in size of which organ, with ageing, is associated with reduction in the power of defence against invasion of pathogens?
  1. A Tonsils
  2. B Thymus
  3. C Spleen
  4. D Peyer's patches
Show answer & explanation

Correct answer: B

Thymus is quite large at the time of birth but keeps reducing in size with age and by the time of puberty reduces to a very small size (atrophy).
20
Lungs are not directly affected in which of the following diseases?
  1. A Pneumonia
  2. B Pulmonary tuberculosis
  3. C Common cold
  4. D Emphysema
Show answer & explanation

Correct answer: C

In common cold, only upper respiratory tract is involved but lungs and alveoli are not directly affected.

Attempt this as a timed test

Reading answers is not the same as sitting the paper. Attempt it timed and you get your score, per-question timing, and the mistakes tracked for revision.

Start free

More Human Health And Disease tests

Human Health And Disease — DPP 1 20 Q Human Health And Disease — DPP 2 20 Q
All Human Health And Disease tests →