AIIMS Zoology Human Health and Diseases Class 12 Questions

Assertion : Soframycin is applied to diseased skin surface and wounds.

Reason : Soframycin is an antibiotic.

Match the following:

Choose the correct statement

Assertion : Escherichia coli, Shigella sp. and Salmonella sp. are all responsible for diarrhoeal diseases.

Reason : Dehydration is common to all types of diarrhoeal diseases and adequate supply of fluids and electrolytes should be ensured.

Assertion: 2.5µm or less than 2.5µm size of SPM is harmful for health.

Reason: Large particles are filtered by nasal cavity & throat

Assertion: There is hyperglycemia in DM type II.

Reason: Insulin injections are essential for treatment.

Assertion: Cannabinoids are drugs of abuse.

Reason: They affect cardiovascular system and Central nervous system activity.

Assertion: Iodine deficiency may lead to irregular menstrual cycle

Reason: Estrogen and progesterone level becomes low

Assertion: Deficiency of an element may lead to scurvy.

Reason: Daily requirement of ascorbic acid is 5 mg/day

Assertion: Opioids are used as drugs of abuse Reason: These slow down metabolism and produce hallucinations

Assertion: Amount of cyanocobalamine required daily is 3 mcg Reason: Its deficiency causes pernicious anaemia

How is Ascariasis transmitted?

Typ$e^{-1}$ diabetes is -

Assertion: Lumbricus and Nereis both belong to Annelida.

Reason: They have nephridia.

Assertion: AIDS occurs by retroviruses whose RNA is enveloped. Reason: It enters into the cell & forms new viruses.

Assertion: IgM is a type of immunoglobulin which cannot cross the placenta. Reason: IgM is pentamer immunoglobulin, joined by J⁻chain.

Assertion: Filarial worm is transmitted to humans by Culex mosquito. Reason: Culex prefers to breed in fresh water.

Assertion: AIDS is caused by the HIV, a retrovirus. Reason: Retroviruses have RNA genome.

Assertion: In jaundice, the skin and mucous membranes assume a yellowish hue. Reason: Yellow pigment bilirubin imparts pale yellow colour to blood plasma.

Which of the following statements is correct ?

1. Common cold - 2013 Droplet Infection.
2. Typhoid - 2013 Contaminated food & water.
3. AIDS - 2013 Shaking hands.
4. Ringworm - 2013 Using infected towels.

Assertion : Sporozoites of malarial parasite enter in the human body due to biting of freshly born female Anopheles mosquito, whose mother was a carrier of malarial parasite. Reason : Male and female gametocytes of malarial parasites are formed in the human intestine.

Which one is correct?

C$D^{-4}$ receptor is associated with

Assertion: Interferons are antiviral proteins. Reason: Interferons are secreted by virus infected cells.

Assertion: All pathogens are parasites but all parasites are not pathogens. Reason: Majority of the parasites confer benefits to the host.

Intermediate host is absent in the infection of

Which of the following sets includes the bacterial disease?

The binding of antibodies to the antigens to produce a large insoluble complex is known as

Assertion: Persons suffering from haemophilia fail to produce blood clotting factor VIII. Reason: Prothrombin producing platelets in such persons are found in very low concentration.

Assertion (A): Antigen can be easily recognized because it has antigenic determinants.

Reason (R): The recognition ability is innate.

Assertion: A person who has received a cut and is bleeding needs to be given anti-tetanus treatment.

Reason: Anti-tetanus injection provides immunity by producing antibodies for tetanus.

Assertion: Cancer cells are virtually immortal until the body in which they reside dies.

Reason: Cancer is caused by damage to genes regulating the cell division cycle.

Assertion: LSD and marijuana are clinically used as analgesics.

Reason: Both these drugs suppress brain function.

An insect bite may result in inflammation of that spot. This is triggered by the alarm chemicals such as:

Formation of non-functional methaemoglobin causes blue-baby syndrome. This is due to:

A young drug addict used to show symptoms of depressed brain activity; feeling of calmness, relaxation and drowsiness. Possibly he was taking:

Antigen binding site in an antibody is found between:

Assertion : Interferons are a type of antibodies produced by body cells infected by bacteria.

Reason : Interferons stimulate inflammation at the site of injury.

Assertion : Organ transplantation patients are given immunosuppressive drugs.

Reason : Transplanted tissue has antigens which stimulate the specific immune response of the recipient.

Assertion : Persons suffering from haemophilia fail to produce blood clotting factor VIII.

Reason : Prothrombin producing platelets in such persons are found in very low concentration.

Which one of the following is a matching pair of a drug and its category?

Electron beam therapy is a kind of radiation therapy to treat

The treatment of snake-bite by antivenine is an example of

Assertion : Tapeworm, roundworm and pinworm are endoparasites of human intestine.

Reason : Improperly cooked food is the source of all intestinal infections.

Which of the following displays immune tolerance?

Lysis of foreign cell is mediated through

In Entamoeba histolytica, the presence of chromatid bodies is characteristic of

Adults of Wuchereria bancrofti attacks

The sites of the first, second and third moulting of the Ascaris larva are

Cocaine is a stimulant, which may cause addiction. It is an alkaloid obtained from: