NEET Zoology Human Health And Diseases Class 12 Questions

Consider the following statements. Statement (A): The malignant malaria is caused by Plasmodium falciparum. Statement (B): The malarial parasite reproduces sexually in the liver cells, bursting the cells and releasing sporozoites into the blood. In the light of above statements, select the correct option.

Select the incorrect match from the following.

Select the correct statement w.r.t. immunity in higher vertebrates.

Which of the following gland is often referred in connection with AIDS?

Complete the following analogy: Filariasis: Culex: Dengue?

In the given below example how many diseases are viral - Dengue, chikungunya, AIDS, influenza, Chicken pox, typhoid, cholera.

Given below are two statements: Statement I: The immediate adverse effects of drugs and alcohol abuse are manifested in the form of reckless behaviour, vandalism and violence. Statement II: Withdrawal syndrome is characterised by anxiety, shakiness, nausea and sweating may be relieved when use is resumed again. In the light of the above statements, choose the most appropriate answer from the options given below:

Cyclosporin-A is used as

Match the disease given in list-I with list-II and list-III and choose correct option:

Reason: Presence of glucose (Glycosuria) and ketone bodies (Ketonuria) in urine are indicative of diabetes mellitus. Assertion: Both A and R are true and R is the correct explanation of A.

Given below are assertion and reason mark the correct choice from given options: Assertion: ADA deficiency patient can be cured by bone marrow transplantation and injection of functional ADA enzyme. Reason: Both of these approaches are not completely curative.

Fill up the blanks given in statements and choose most suitable words. (i) __________ (1) __________ cells show a property of __________ (2) __________ due to which they inhibit uncontrolled growth of adjacent cells. (ii) Metastasis is the most feared property of __________ (3) __________ tumours. (iii) The malignant tumours are a mass of proliferating cells called __________ (4) __________ cells. (iv) Cancer causing viruses called __________ (5) __________ have genes called __________ (6) __________. (v) __________ (7) __________ against cancer specific __________ (8) __________ are also used for detection of certain cancers.

Which statements are correct for drugs? (i) Heroin is a white, odourless, bitter crystalline compound which generally taken by snorting and injection. (ii) Cannabinoids generally taken by inhalation and oral ingestion. (iii) Cocaine, commonly called coke or crack is usually snorted. (iv) Coca alkaloid or cocaine is obtained from coca plant Erythroxylum coca, native to South America. (v) These days cannabinoids are also being abused by some sportspersons. (vi) Excessive dosage of cocaine causes hallucinations. (vii) Lysergic acid diethyl amides (LSD), Atropa belladona and Datura produces hallucinogenic effect.

Match the following columns:

The disease Chickunguniya is transmitted by:

Assertion (A): The principle of vaccination is based on memory property of our immune system. Reason (R): Vaccines generates memory-B and T cells that recognise the pathogen quickly on subsequent exposure.

Interferons are secreted by :

Assertion (A): Osteoporosis is characterised by decreased bone mass and increased chances of fractures. Reason (R): Common cause of osteoporosis is increased level of estrogen.

What is an autoimmune disorder?

Given below are two statements: Statement-I: When an infected female Anopheles mosquito bites, it releases gametocytes of plasmodium into the healthy person. Statement-II: The female Anopheles mosquito takes up sporozoites of plasmodium with blood meal from and infected person, suffering from malaria. In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are assertion and reason mark the correct choice from given options. Assertion: Every cell is sensitive for cancer due to cellular oncogenes (c-onc) or proto- oncogenes are found in each normal cell. Reason: Proto-oncogenes are activated under certain conditions, could lead to oncogenic transformation of the cells.

Match the following sexually transmitted diseases (Column-I) with their causative agent and select the correct option:

Which of the following option is correct for given statement? (i) Correction of a genetic defect involves delivery of a normal gene into the individual or embryo. (ii) The first clinical gene therapy was given in 1990 to a⁴⁻year-old girl with adenosine deaminase (ADA) deficiency. (iii) Adenosine deaminase (ADA) enzyme is crucial for the immune system to function. (iv) Adenosine deaminase (ADA) deficiency disorder is caused due to the deletion of the gene for adenosine deaminase. (v) In some children ADA deficiency can be cured by bone marrow transplantation. (vi) In some children ADA deficiency treated by enzyme replacement therapy, in which functional ADA is given to the patient by injection.

Given below are assertion and reason. Mark the correct choice from given options: Assertion: For effective treatment of a disease, early diagnosis and understanding of its pathophysiology is very important. Reason: Early detection is possible by using conventional methods of diagnosis through serum and urine analysis.

Which are correct: A. Computed tomography and magnetic resonance imaging detect cancers of internal organs. B. Chemotherapeutics drugs are used to kill non-cancerous cells. C. α-interferon activate the cancer patients’ immune system and helps in destroying the tumour. D. Chemotherapeutic drugs are biological response modifiers. E. In the case of leukaemia blood cell counts are decreased. Choose the correct answer from the options given below:

Neoplastic characteristics of cells refer to : A. A mass of proliferating cell B. Rapid growth of cells C. Invasion and damage to the surrounding tissue D. Those confined to original location Choose the correct answer from the options given below:

Identify the statement that is NOT correct. (1) Each antibody has two light and two heavy chains. (2) The heavy and light chains are held together by disulfide bonds. (3) Antigen binding site is located at C⁻terminal region of antibody molecules. (4) Constant region of heavy and light chains are located at C⁻terminus of antibody molecules.

After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s) / tissue(s) like: A. thymus B. bone marrow C. spleen D. lymph nodes E. Peyer’s patches Choose the correct answer from the options given below:

Why can’t insulin be given orally to diabetic patients?

Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body?

Match List I with List II :

Match List I with List II:

Match List I with List II:

Given below are two statements: Statement I: Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced. Statement II: Both bone marrow and thymus provide micro environments for the development and maturation of T⁻lymphocytes. In the light of the above statements, choose the most appropriate answer from the options given below:

Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?

In which blood corpuscles, the HIV undergoes replication and produces progeny viruses?

Match List I with List II.

Match List I with List II.

Given below are two statements: Statement I: Autoimmune disorder is a condition where body defence mechanism recognizes its own cells as foreign bodies. Statement II: Rheumatoid arthritis is a condition where body does not attack self cells. In the light of the above statements, choose the most appropriate answer from the options given below:

Select the incorrect statement with respect to acquired immunity. (A) Anamnestic response is due to memory of first encounter. (B) Acquired immunity is non-specific type of defense present at the time of birth. (C) Primary response is produced when our body encounters a pathogen for the first time. (D) Anamnestic response is elicited on subsequent encounters with the same pathogen.

Match List - I with List - II.

Identify the wrong statement with reference to immunity.

Match the following diseases with the causative organism and select the correct option.

The infectious stage of Plasmodium that enters the human body is:

Identify the CORRECT pair representing the causative agent of typhoid fever and the confirmatory test for typhoid.

Drug called ‘Heroin’ is synthesized by:

In which disease does mosquito transmitted pathogen cause chronic inflammation of lymphatic vessels?

Which of the following is an occupational respiratory disorder?

Which part of poppy plant is used to obtain the drug “Smack”?

Which of the following is NOT an autoimmune disease?