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NEET • BIOLOGY • HUMAN HEALTH AND DISEASES

Human health and diseases practice · Mixed difficulty

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Showing 181-210 of 259 questions

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181 Easy

181 of 259

Remembering +4 | -1

Which of the given sets include lymphatic organs?

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Correct option: A

Thymus, lymph nodes and spleen

Option A (Thymus, lymph nodes and spleen) is correct because these are all primary and secondary lymphoid organs involved in the immune system.

182 Easy

182 of 259

Understanding +4 | -1

Fever in malaria is due to

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Correct option: A

Release of merozoites from RBCs

Option A (Release of merozoites from RBCs) is correct because the fever in malaria is caused by the release of merozoites and associated toxins from infected red blood cells.

183 Medium

183 of 259

Remembering +4 | -1

Triatoma infestans is the intermediate host in the life cycle of

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Correct option: B

Trypanosoma cruzi

Option B (Trypanosoma cruzi) is correct because Triatoma infestans, also known as the \"kissing bug,\" is the vector for Trypanosoma cruzi, the parasite that causes Chagas disease.

184 Easy

184 of 259

Remembering +4 | -1

Colostrum provides the infant with

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Correct option: B

Passive immunity

Option B (Passive immunity) is correct because colostrum provides the infant with antibodies directly, offering immediate but temporary protection.

185 Medium

185 of 259

Understanding +4 | -1

Regarding common cold consider the following statements
I. Rhinovirus is responsible for common cold which infects the nasal epithelium and respiratory passage but not the lungs
II. The symptoms of common cold included nasal congestion and discharge, sore throat, gruffiness, cough, headache and tiredness
Which of the statement given above is/are correct?

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Correct option: C

I and II

Option C (I and II) is correct because both statements accurately describe the common cold and its symptoms.

186 Easy

186 of 259

Remembering +4 | -1

Which of the following is a pair of bacterial diseases?

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Correct option: A

Typhoid and Pneumonia

Option A (Typhoid and Pneumonia) is correct because both Typhoid and Pneumonia are caused by bacteria.

187 Medium

187 of 259

Remembering +4 | -1

Male Anopheles does not transmit malarial parasite because

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Correct option: D

It does not drink blood

Option D (It does not drink blood) is correct because only female Anopheles mosquitoes require blood meals to develop their eggs, and thus transmit the malarial parasite.

188 Easy

188 of 259

Remembering +4 | -1

Which of the following is a protozoan disease?

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Correct option: D

All of these

Option D (All of these) is correct because Malaria, Amoebiasis, and Sleeping sickness are all caused by protozoans.

189 Easy

189 of 259

Understanding +4 | -1

Identify the incorrect from the following

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Correct option: C

Coke and smack are obtained from Erythroxylum coca

Option C is correct. Cocaine is obtained from Erythroxylum coca, but smack (heroin) is derived from opium poppy (Papaver somniferum), not Erythroxylum coca.

190 Hard

190 of 259

Understanding +4 | -1

Assertion : AIDS is a disorder caused by HIV.

Reason : HIV is a virus that damages immune
system of its host.

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Correct option: A

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

Option A is correct because HIV causes AIDS by damaging the immune system, which is the correct explanation.

191 Medium

191 of 259

Remembering +4 | -1

Tiny lesions of multiple sclerosis on brain and spinal tissue can be observed by

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Correct option: A

Magnetic resonance imaging

The correct answer is A (Magnetic resonance imaging) because MRI is highly sensitive in detecting lesions in soft tissues like the brain and spinal cord.

192 Easy

192 of 259

Analyzing +4 | -1

Assertion (A): Most cancers are treated by combination of surgery, radiotherapy and chemotherapy.
Reason (R): Tumor cells have been shown to avoid detection and destruction by immune system.
In the light of the above statements, choose the correct answer from the options given below:

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Correct option: A

Both (A) & (R) are correct but (R) is not the correct explanation of (A)

Option A is correct because both the assertion and the reason are correct, but the reason does not explain why cancers are treated with a combination of therapies.

193 Easy

193 of 259

Remembering +4 | -1

One of the following is NOT a bacterial infection

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Correct option: D

Mumps

Option D (Mumps) is correct because Mumps is a viral infection, while the other options are caused by bacteria.

194 Hard

194 of 259

Remembering +4 | -1

Vinblastine is obtained from:

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Correct option: A

Catharanthus roseus

Option A (Catharanthus roseus) is correct because vinblastine, an anti-cancer drug, is derived from the Madagascar periwinkle, Catharanthus roseus.

195 Hard

195 of 259

Remembering +4 | -1

Identify the tumor suppressor genes form the following.

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Correct option: B

P^{53}

genes

Option B (

P^{53}

genes) is correct because

P^{53}

is a well-known tumor suppressor gene that regulates cell division and prevents cancer development.

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196 Easy

196 of 259

Understanding +4 | -1

In vaccination, a preparation of

View answer and explanation

Correct option: D

All of the above

Option D (All of the above) is correct because vaccines can contain antigenic proteins, inactivated pathogens, or weakened pathogens to stimulate an immune response.

197 Easy

197 of 259

Understanding +4 | -1

Choose the odd one out w.r.t. secondary lymphoid organs.

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Correct option: B

Thymus

Option B (Thymus) is correct because the thymus is a primary lymphoid organ, while the others are secondary lymphoid organs.

198 Easy

198 of 259

Remembering +4 | -1

The term ‘Health’ is defined in many ways. The most accurate definition of the health would be

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Correct option: C

Health is a state of complete physical, mental and social well-being

Option C is correct. Health is defined as a state of complete physical, mental, and social well-being, not merely the absence of disease.

199 Easy

199 of 259

Remembering +4 | -1

Allergy is due to the release of chemicals like _____ and serotonin from ____ cells.

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Correct option: B

Histamine, mast

Option B (Histamine, mast) is correct because histamine and serotonin are released from mast cells during an allergic reaction.

200 Medium

200 of 259

Understanding +4 | -1

Which of the following biosynthetic processes does an antibiotic impede in order to prevent cell-wall biosynthesis?

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Correct option: D

Peptidoglycans

Option D (Peptidoglycans) is correct because many antibiotics target the synthesis of peptidoglycans, which are essential components of bacterial cell walls.

201 Easy

201 of 259

Understanding +4 | -1

Broad spectrum antibiotic

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Correct option: D

Acts on a variety of pathogenic microorganisms

Option D (Acts on a variety of pathogenic microorganisms) is correct because broad-spectrum antibiotics are effective against a wide range of bacteria.

202 Medium

202 of 259

Understanding +4 | -1

HIV virus affect …. In AIDS patient.

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Correct option: D

Helper T-Cells

Option D (Helper T-Cells) is correct because HIV primarily infects and destroys Helper T-Cells (CD4+ T-cells).

203 Medium

203 of 259

Remembering +4 | -1

Cells obtained from cancerous tumours are known as

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Correct option: B

Myelomas

Option B (Myelomas) is correct because myelomas are cancerous plasma cells, which are often obtained from cancerous tumors.

204 Easy

204 of 259

Remembering +4 | -1

Humoral immune system defends against viruses and bacteria is present in

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Correct option: C

Both (1) and (2)

Option C (Both (1) and (2)) is correct because the humoral immune system, which defends against viruses and bacteria, is present in both blood and lymph.

205 Hard

205 of 259

Analyzing +4 | -1

Assertion : Severe Acute Respiratory
syndromes is common in China.

Reason : China is the most populated country
of the world.

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 is correct because both the assertion and the reason are true, but the reason is not the correct explanation of the assertion. SARS was common in China, and China is the most populated country, but population size doesn't directly cause SARS.

206 Easy

206 of 259

Remembering +4 | -1

The thymus is a lobed organ located near the …A… and beneath the …B… . The most appropriate combination for A and B is

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Correct option: A

A-heart; B-breast bone

Option A (A-heart; B-breast bone) is correct because the thymus is located near the heart and beneath the breast bone (sternum).

207 Hard

207 of 259

Remembering +4 | -1

The vaccine MMR is effective in preventing

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Correct option: A

Measles, Mumps, Rubella

Option A (Measles, Mumps, Rubella) is correct because the MMR vaccine is a combination vaccine that provides immunity against measles, mumps, and rubella.

208 Hard

208 of 259

Understanding +4 | -1

[A]: AIDS virus is highly mutable.

[R]: It lacks DNA polymerase to repair its mutated genome.

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Correct option: A

Both A and R are true and R is the correct explanation of A

Option A (Both A and R are true and R is the correct explanation of A) is correct because the AIDS virus (HIV) mutates rapidly due to the lack of DNA polymerase for error correction during replication.

209 Medium

209 of 259

Remembering +4 | -1

The use of antihistamine, adrenaline and steroids quickly reduce the symptoms of

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Correct option: C

Allergy

Option C (Allergy) is correct because antihistamines, adrenaline, and steroids are commonly used to treat allergic reactions.

210 Easy

210 of 259

Remembering +4 | -1

Sphygmomanometer measures

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Correct option: C

Blood pressure

Option C is correct. A sphygmomanometer measures blood pressure.

Revision notes and key takeaways

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Showing 181-210 of 259 questions

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Human health and diseases practice · Mixed difficulty

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