Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
MALT constitutes about..........per cent of the lymphoid tissue in human body.
(a) MALT is mucosa associated lymphoid tissue located with in the lining of the major tracts like respiratory, digestive and urinogenital tracts. It is nearly 50% of the total lymphoid tissue in the human body.
Transplantation of tissues/organs fails often due to non-acceptance by the patient's body. Which type of immune-response is responsible for such rejections?
(b) Transplantation of tissue/organs may fail, when that tissue is rejected by the recipients immune system leading to its destruction. Tissue rejection is a function of cell-mediated immune response that involves T-cells.These cells have the ability to distinguish between self and non- self. After the recognition of non-self tissue, the killer T-cells induces apoptosis of the target tissue.
Which of the following sets of diseases is caused by bacteria?
(a) Cholera and tetanus are diseases caused by bacteria. Cholera is caused by a bacterium Vibrio cholerae and tetanus is caused by a bacterium Clostridium tetani.
Mumps, influenza, herpes and smallpox are viral diseases. Typhoid is a bacterial disease but it is not paired with a bacterial disease. Hence, option (a) is correct.
Asthma may be attributed to
(a) Asthma is an allergic reaction characterised by spasm of bronchi muscles because of effect of histamine released by mast cells.
Which of the following immunoglobulins does constitute the largest percentage in human milk?
All types of immunoglobulin are found in human milk. Out of these secretory IgA, a type of immunoglobulin that protects the ears, nose, throat and the gastrointestinal tract, is found in largest amount.
If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence?
Globulin is one of the protein found in serum and it includes proteins, enzymes, complement and immunoglobulins (antibody).
That's why, if major deficiency of antibodies is suspected in a person, the globulins in serum is tested as the confirmatory evidence.
Grafted kidney may be rejected in a patient due to
(b) Grafted kidney may be rejected in a patient due to the cell-mediated immune response that is mediated by T-lymphocytes. The body is able to differentiate 'self' and 'non-self'. Therefore, tissue matching, blood group matching are essential before undertaking any graft/transplant and even after this the patient has to take immunosupressants all his/her life.
Whic of the following diseases is caused by a protozoan?
Babesiosis is a malaria-like parasitic disease caused by infection with Babesia bigemina, a genus of protozoa piroplasms.
Syphllis - Treponema pallidum (bacterium)
Influenza - Influenza virus
Blastomycosis - Blastomyces dermatitidis (fungus)
Which of the following viruses is not transferred through semen of an infected male?
The active form of Entamoeba histolytica feed upon
Entamoeba histolytica is a protozoan parasite responsible for a disease called amoebiasis. It occurs usually in the large intestine and causes internal inflammation. Neutrophils and non-activated macrophages may be killed and ingested by the organism, limiting the ability of the immune system to deal with the disease. E. histolytica is also capable of phagocytosing red blood cells. They feed up on erythrocytes, mucosa and submucosa of colon.
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every NEET question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.