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NEET • BIOLOGY • HUMAN HEALTH AND DISEASES

Human health and diseases practice · Mixed difficulty

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Showing 121-150 of 259 questions

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121 Medium

121 of 259

Understanding +4 | -1

Assertion: Dust particles when come in contact with respiratory tract lead to sneezing, running nose, redness of eyes, etc.

Reason: Allergic disorders are caused due to release of histamine.

View answer and explanation

Correct option: A

If both Assertion and Reason are correct and Reason is the correct explanation of Assertion

Option A (If both Assertion and Reason are correct and Reason is the correct explanation of Assertion) is correct because histamine release is the primary cause of allergic symptoms like sneezing and runny nose.

122 Easy

122 of 259

Remembering +4 | -1

Humoral immunity is provided by

View answer and explanation

Correct option: D

Antibodies

Option D (Antibodies) is correct because humoral immunity is mediated by antibodies produced by B lymphocytes.

123 Medium

123 of 259

Understanding +4 | -1

Which of the following statements best describes the role of reverse transcriptase?

View answer and explanation

Correct option: C

Synthesis of DNA from genomic RNA

Option B is correct because reverse transcriptase is an enzyme that synthesizes DNA from an RNA template, specifically genomic RNA in this context.

124 Easy

124 of 259

Analyzing +4 | -1

Choose the odd one w.r.t physical carcinogens

View answer and explanation

Correct option: A

Tobacco smoke

Option A (Tobacco smoke) is correct because it is a chemical carcinogen, while Gamma rays, UV rays, and X-rays are all forms of physical (radiation) carcinogens.

125 Hard

125 of 259

Remembering +4 | -1

Which of the following types of antibiotics is anthramycin?

View answer and explanation

Correct option: C

Antitumor

Option C (Antitumor) is correct because anthramycin is an antibiotic with antitumor properties, used in cancer treatment.

126 Easy

126 of 259

Remembering +4 | -1

Among the non infectious diseases, the one which causes major deaths is

View answer and explanation

Correct option: C

Cancer

Option C (Cancer) is correct because cancer is a leading cause of death among non-infectious diseases globally.

127 Medium

127 of 259

Remembering +4 | -1

HIV is a member of group of viruses alled

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Correct option: A

Retrovirus

Option A (Retrovirus) is correct because HIV belongs to the retrovirus family, characterized by using reverse transcriptase to convert RNA to DNA.

128 Easy

128 of 259

Remembering +4 | -1

Most cancers are treated by the combination of
a) Radiotherapy b) Chemotherapy c) Surgery
Choose the correct option

View answer and explanation

Correct option: D

a,b and c

Option D (a,b and c) is correct because most cancers are treated by a combination of radiotherapy, chemotherapy, and surgery.

129 Medium

129 of 259

Understanding +4 | -1

Benign tumours
I. remain confined to their original location and do not spread to other parts
II. cause little damage
Which of the statements given above is/are correct?

View answer and explanation

Correct option: C

I and II

Option C (I and II) is correct because benign tumors are confined to their original location and generally cause little damage.

130 Medium

130 of 259

Analyzing +4 | -1

A person is suffering from one disease and shows the following symptoms, like sustained high fever (39 to 40 degree Celsius), weakness, stomach pain, constipation, headache and loss of appetite. His doctor confirmed that he is suffering from one bacterial infection.

On which of the following facts (given below) his doctor confirmed the bacterial infection.

(i) Salmonella typhi bacteria are responsible for the infection

(ii) Streptococcus pneumonia is responsible for the infection

(iii) By seeing the report which shows the positive result of Widal test

(iv) The pathogen is transmitted through the bite of female Anopheles mosquito
(v) As a result of infection, the alveoli get filled with fluid leading to severe problem in respiration

View answer and explanation

Correct option: A

(i) and (iii) only

Option A is correct because the symptoms and Widal test positivity confirm Salmonella typhi infection, which causes typhoid fever.

131 Medium

131 of 259

Remembering +4 | -1

Which technique uses the body’s water molecules as the bases for its images?

View answer and explanation

Correct option: B

MRI

Option B (MRI) is correct because Magnetic Resonance Imaging (MRI) uses the body's water molecules and their response to magnetic fields to generate images.

132 Hard

132 of 259

Remembering +4 | -1

Third moulting in Ascaris larva takes place in

View answer and explanation

Correct option: A

Lung

The correct answer is A (Lung) because the third moulting of Ascaris larva occurs in the lungs.

133 Easy

133 of 259

Remembering +4 | -1

The helminthic parasite showing the symptom of ‘anaemia’ is

View answer and explanation

Correct option: A

Ascaris lumbricoides

Option A (Ascaris lumbricoides) is correct because Ascaris worms reside in the small intestine and can cause anemia by interfering with nutrient absorption and sometimes by directly consuming blood.

134 Easy

134 of 259

Remembering +4 | -1

After drinking alcohol, a person walks clumsily because, the alcohol affects his

View answer and explanation

Correct option: A

Cerebellum

Option A (Cerebellum) is correct because the cerebellum is responsible for coordination and balance, which are impaired by alcohol consumption.

135 Medium

135 of 259

Understanding +4 | -1

Regarding pathogens consider the following statements
I. A pathogen or an infectious agent is a microorganism, such as a virus, bacterium, fungus that causes disease in its host
II. These pathogens multiply in our body and interfere with the normal vital activities, resulting in morphological and functional damage
Which of the following statement (s) is/are correct?

View answer and explanation

Correct option: C

I and II

Option C (I and II) is correct because both statements accurately describe pathogens and their effects on the host.

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136 Medium

136 of 259

Analyzing +4 | -1

A male showing aggressiveness, mood swings, depression, reduction of size of the testicles, decreased sperm production, breast enlargement premature baldness. Possibly he is taking

View answer and explanation

Correct option: A

Anabolic steroids

Option A is correct because the symptoms described (aggressiveness, mood swings, testicular size reduction, etc.) are characteristic side effects of anabolic steroid use.

137 Medium

137 of 259

Understanding +4 | -1

Reasons for alcohol abuse in adolescents are
I. social pressure
II. curiosity and need for adventure, excitement and experiment
III. to escape from stress, depression and frustration
IV. to overcome hardships of daily life
Which of the statements given above are correct?

View answer and explanation

Correct option: D

I, II, III and IV

Option D (I, II, III and IV) is correct because all listed reasons contribute to alcohol abuse in adolescents.

138 Easy

138 of 259

Understanding +4 | -1

Which one of the following statements is correct?

View answer and explanation

Correct option: D

Malignant tumours may exhibit metastasis

Option D (Malignant tumours may exhibit metastasis) is correct because metastasis, the spread of cancer cells to other parts of the body, is a characteristic of malignant tumors.

139 Easy

139 of 259

Understanding +4 | -1

Both sickle cell anaemia and Huntington’s chorea are

View answer and explanation

Correct option: B

Congenital disorders

Option B (Congenital disorders) is correct because both sickle cell anemia and Huntington's chorea are genetic disorders present from birth.

140 Medium

140 of 259

Remembering +4 | -1

Which of the following is used in the production of the recombinant Hepatitis B vaccine?

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Correct option: A

Yeast

Option A (Yeast) is correct because yeast is commonly used as a host organism in the production of recombinant Hepatitis B vaccine.

141 Hard

141 of 259

Understanding +4 | -1

Assertion: Morphine is very effective and
sedative.

Reason: It is very useful for the patients who
have depression.

View answer and explanation

Correct option: C

If Assertion is true but Reason is false

Option C is correct because while Morphine is effective and sedative, it is not useful for patients with depression; it can actually worsen their condition.

142 Easy

142 of 259

Understanding +4 | -1

Which one of the following abnormalities in the host is associated to Wuchereria, Plasmodium and Fasciola respectively?
I. Parasitic castration
II. Hyperplasia
III. Febrile paroxysm
IV. Peritonitis
V. Lymphangitis

View answer and explanation

Correct option: A

V, III and II

Option A (V, III and II) is correct because Wuchereria causes Lymphangitis, Plasmodium causes Febrile paroxysm, and Fasciola causes Hyperplasia.

143 Easy

143 of 259

Understanding +4 | -1

Excessive doses of drugs may lead to coma and death due to

View answer and explanation

Correct option: D

All of the above

Option D (All of the above) is correct because excessive drug doses can lead to respiratory failure, heart failure, and cerebral hemorrhage, all of which can result in coma and death.

144 Hard

144 of 259

Remembering +4 | -1

Koch's postulates are related to:

View answer and explanation

Correct option: C

Laws of diseases

The correct answer is C (Laws of diseases) because Koch's postulates are a set of criteria used to establish a causative relationship between a microorganism and a disease.

145 Medium

145 of 259

Analyzing +4 | -1

Study the following.

a. Heroin is a depressant and slows down body functions

b. Cannabinoids are known for their effects on cardio vascular system

c. Opioid receptors are present in CNS and GI tract

d. Crack has a potent inhibitory action on CNS

Which of the above are incorrect?

View answer and explanation

Correct option: D

Only d

Option D is correct because Crack is a stimulant, not a depressant, and therefore does not have an inhibitory action on the CNS.

146 Easy

146 of 259

Understanding +4 | -1

Which of the following statement is correct?

View answer and explanation

Correct option: B

The antibodies produced in allergy are of IgE type

Option B is correct. IgE antibodies are indeed produced in allergic reactions.

147 Easy

147 of 259

Understanding +4 | -1

HIV can not be transmitted through the following options except by

View answer and explanation

Correct option: D

Sharing razor blades

Option D is correct because HIV cannot be transmitted through casual contact but can be transmitted through direct blood contact, such as sharing razor blades.

148 Easy

148 of 259

Understanding +4 | -1

Damage to thymus in a child may lead to

View answer and explanation

Correct option: A

Loss of cell-mediated immunity

Option A (Loss of cell-mediated immunity) is correct because the thymus is responsible for the maturation of T cells, which are essential for cell-mediated immunity.

149 Medium

149 of 259

Understanding +4 | -1

Necessary steps for achieving good health are
I. awareness about disease
II. vaccination
III. proper disposal of wastes
IV. maintenance of hygienic food and water resources
V. Water resources
The correct combination having necessary steps is

View answer and explanation

Correct option: D

I, II, III and IV

The correct answer is D (I, II, III and IV) because all listed steps are necessary for achieving good health.

150 Medium

150 of 259

Analyzing +4 | -1

Assertion: Sometimes nonsmokers are prone to
lung cancer.

Reason: Nonsmokers are also called passive
smokers.

View answer and explanation

Correct option: B

If both Assertion and Reason are true but Reason
is not the correct explanation of Assertion

Option B (If both Assertion and Reason are true but Reason is not the correct explanation of Assertion) is correct because while both statements are true, passive smoking isn't the only reason for lung cancer in non-smokers; genetic predisposition and other environmental factors also play a role.

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 121-150 of 259 questions

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Human health and diseases practice · Mixed difficulty

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