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?

Choose the correct set of bacterial disease

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:

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

Cyclosporin-A is used as

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?

Which of the following is “Clot buster”

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.

What is the primary mode of transmission for HIV/AIDS?

What is the main source of infection for amoebiasis caused by Entamoeba histolytica?

What is the primary role of helper T-lymphocytes (TH) in HIV infection?

Which of the following is a common approach for the treatment of cancer?

What is the primary characteristic of cancer cells compared to normal cells?

Which of the following drugs is primarily obtained from the poppy plant?

What type of immunity is developed when a host produces antibodies after exposure to antigens?

What is the role of the thymus in the immune system?

Which of the following measures is NOT recommended to control mosquito populations that transmit malaria?

What type of antibodies are produced in response to allergens in allergic reactions?

What is a key characteristic of the HIV virus's replication process in the human body?

What is the main role of macrophages in the progression of HIV infection?

What substance in tobacco stimulates the adrenal gland to release adrenaline and nor-adrenaline?

What is the primary organ where all blood cells, including lymphocytes, are produced?

Which of the following statements about disease prevention and management is correct?

Which of the following statements about health and diseases is correct?

Which of the following statements about drug abuse and cancer is correct?

Which combination of statements about cancer and immunity is correct?

Which of the following combinations about HIV/AIDS and immunity is correct?

Which of the following combinations correctly describe aspects of AIDS and cancer?

Which combination of statements correctly describes immunity and allergic reactions?

Assertion (A): Intravenous drug users are at higher risk of acquiring AIDS.

Reason (R): AIDS can be transmitted through sharing of infected needles and syringes.

Assertion (A): In cancer cells, there is a breakdown of regulatory mechanisms controlling cell growth and differentiation.

Reason (R): Cancer cells lose the property of contact inhibition, leading to the formation of tumors.

Assertion (A): Cancer cells continue to divide uncontrollably.

Reason (R): Cancer cells have lost the property of contact inhibition.