HEALTH-AND-DISEASES-QUIZ-6

BIOLOGY HEALTH AND DISEASES QUIZ-6

Dear Readers,

NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions. About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus. Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced..

Q1. Blood circulation was discovered by

•  William Harvey
•  Hippocrates
•  Karl Landsteiner
•  Paul Ehrlich

Solution
(a) The circulation of the blood in the body was discovered by William Harvey

Q2.HIV can not be transmitted through the following options except by

•  Hugging
•  Sharing foods
•  Using public toilet
•  Sharing razor blades

Solution
(d) HIV can be transmitted from an infected person to another through. Blood (including menstrual blood), infected needles and synthesis, semen, sexual intercourse with infected person vaginal secretions, breast milk

Q3.  Bambykol or gyplure is a

•  Drug
•  Harmone
•  Antibiotic
•  pheromone

Solution
(d) Bombykol or gyplure is a insect pheromone.

Q4. The tests that are used in the diagnosis of AIDS are

•  ELISA and immunoblot
•  Northern blot and ELISA
•  ELISA and southern blot
•  Western blot and ELISA

Solution
(d) The two common tests used in the diagnosis of AIDS are Western Blot (culturing of blood and testing plasma for virus) and ELISA(Enzyme Linked ImmunosorbentAaaay).

Q5.Which of the following is related to humoral immunity?

•  T-lymphocyte
•  B- lymphocyte
•  I- lymphocyte
•  P- lymphocyte

Solution
(b) The term humor refers to plasma and lymph. B-lymphocytes mature within the bone marrow. The progeny of B-cells differentiate into memory B-cells and effector B-cells called plasma cells. A single plasma cell can secrete more than 2000 molecule of antibody per second. Secreted antibodies are major effector molecules of humoral immunity.

Q6. Which group of three of the following five statements (I-V) contains is correct regarding beriberi?
I. A crippling disease prevalent among the native population of sub-Sahara Africa.
II. A deficiency disease caused by lack of thiamine (vitamin-B_1).
III. A nutritional disorder in infants and young children when the diet is persistantly deficient in essential protein.
IV. Occurs in those countries where the staple diet is polished rice.
V. The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure.

•  I, II and IV
•  II, III and V
•  I,III and V
•  II, IV and V

Solution
(d) Statements II, IV and V are correct regarding beri-beri disease.

Q7.An autoimmune disease is

• AIDS
•  Haemophilia
•  Haemophilia
•  Myasthenia gravis

Solution
(d) Myasthenia gravis is an autoimmune disease characterized by the chronic fatigability and weakness of muscles, espeically in the face and throat, as result of defect in the conduction of nerve impulses at the myoneural junction.

Q8.An example of gene therapy is

• Production of injectable hepatitis-B vaccine
•  Production of vaccines in food crops like potatoes which can be eaten
•  Introduction of gene for adenosine deaminase in persons suffering from Severe Combined             Immuno Deficiency(SCID)
•  Production of test tube babies by artificial insemination and implantation of fertilized eggs

Solution
(c) The treatment of inherited diseases by introducing wild type copies of the defective gene is called gene therapy, for example, introduction of gene for adenosine deaminase in person suffering from Severe Combined Immuno-deficiency (SCID).

Q9.Malignant malaria is caused by

•  Plasmodium falciparum
•  Plasmodium ovale
•  Plasmodium vivax
•  Plasmodium malariae

Solution
(a) Malignant tertian/irregular/quotidian (cerebral malaria) is caused by Plasmodium falciparum, which is tropical in distribution.

Q10. Flemming, Chain and Florey were awarded the Nobel Prize in 1945 for the discovery of

•  HIV
•  CT scan
•  Penicillin
•  Staphylococcus

Solution
(c) Alexander Fleming discovered the first antibiotic, penicillin while working, on Staphylococcus bacteria. However its full potential as in effective antibiotic was established much later by Ernst Chain and Howard florey. They were awarded the Nobel Prize in 1945 for this discovery.