MCQs for Biology Class 12 with Answers Chapter 8 Human Health and Diseases
Students of class 12 Biology should refer to MCQ Questions Class 12 Biology Human Health and Diseases with answers provided here which is an important chapter in Class 12 Biology NCERT textbook. These MCQ for Class 12 Biology with Answers have been prepared based on the latest CBSE and NCERT syllabus and examination guidelines for Class 12 Biology. The following MCQs can help you to practice and get better marks in the upcoming class 12 Biology examination
Chapter 8 Human Health and Diseases MCQ with Answers Class 12 Biology
MCQ Questions Class 12 Biology Human Health and Diseases provided below have been prepared by expert teachers of grade 12. These objective questions with solutions are expected to come in the upcoming Standard 12 examinations. Learn the below provided MCQ questions to get better marks in examinations.
Question. Which is not an opiate narcotic?
Question. What is the role of complement in the body’s defence?
(a) It interference with viral replication
(b) It is involved with antibody production
(c) It aids antigen presentation
(d) It causes cell lysis
Question. Chloride shift occurs in response to
Question. Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing usually high content of
(a) Carbon disulphide
(c) Carbon dioxide
(d) Carbon monoxide
Question. Tobacco smoke contains carbon monoxide, which
(a) Reduces the oxygen-carrying capacity of blood
(b) Causes gastric ulcers
(c) Raises blood pressure
(d) Is carcinogenic
Question. Given below are four matchings of an animal and its kind of respiratory organ
I. Silver fish – Trachea
II. Scorpion – Book lung
III. Sea squirt – Pharyngeal gills
IV. Dolphin – Skin
The correct matching are
(a) II and IV
(b) III and IV
(c) I and IV
(d) I, II and III
Question. When carbon dioxide concentration in blood increases breathing becomes
(a) Shallower and slow
(b) There is no effect on breathing
(c) Slow and deep
(d) Faster and deeper
Question. The oxygen toxicity is related with
(a) Blood poisoning
(b) Collapsing of alveolar walls
(c) Failure of ventilation of lungs
(d) Both (a) and (b)
Question. Arrange the following in the order of increasing volume
I. Tidal volume
II. Residual volume
III. Expiratory reserve volume
IV. Vital capacity
(a) I < II < III < IV
(b) I < III < II < IV
(c) I < IV < III < IV
(d) I < IV < II < III
Question. The vital capacity of human lung is equal to
(a) 500 mL
(b) 4600 mL
(c) 5800 mL
(d) 2300 mL
Question. If the level of carboxyhaemoglobin in blood reaches upto …. the functioning of central nervous system is severely affected which results in death.
(a) 1 to 2%
(b) 0.20 to 0.30 %
(c) 0.30 to 0.40 %
(d) 0.1 to 5%
Question. After a deep inspiration and maximum expiration, the capacity of lungs is known as
(a) Vital capacity
(b) Tidal volume
Question. Which is called Hamburger shift?
(a) Hydrogen shift
(b) Bicarbonate shift
(c) Chloride shift
(d) Sodium shift
Question. Left shift of oxyhaemoglobin curve is noticed under
(a) Normal temperature and pH
(b) Low temperature and high pH
(c) Low pH and high temperature
(d) Low pH and low temperature
Question. Read the following statements and select the correct one
(a) The H+ released from carbonic acid combines with haemoglobin to form haemoglobinic acid (b) Oxyhaemoglobin of erythrocytes is alkaline
(c) More than 70% of carbon dioxide is transferred from tissue to the lungs in the form of carbamino compounds
(d) In lungs, the oxygen from the alveolus reaches the blood through active transport
Question. In blood, carbon dioxide is transported majorly as
(a) Sodium carbonate
(d) Carbon dioxide as such
Question. Pick the correct statement
(a) The contraction of internal intercostal muscles lifts up the ribs
(b) The RBCs transports oxygen only
(c) Healthy man can inspire approximately 500 ml of air per minute
(d) During expiration, the intrapulmonary pressure is slightly higher than surrounding atmospheric pressur
Question. Which one is the cofactor of carbonic anhydrase?
Question. Choose the correct statement from the following.
(a) Widal test is used for detect Cholera
(b) Restriction endonuclease is found in HIV.
(c) Malaria is caused by female Anopheles mosquito.
(d) Adult humans possess 26 cervical vertebrae.
Question. ‘Bhang’ and ‘Ganja’ are
(a) Extract of hemp plant – Cannabis sativa
(b) Ripe poppy fruits and leaves
(c) Dried leaves, flowers and buds of Cannabis indica plant
(d) None of above
Question. A large quantity of monoclonal antibodies are produced from –
(b) Myeloma cells
(c) Hybridoma cells
Question. Which of the following addictive habit could lead to danger of urinary bladder, throat and lungs cancer?
Question. A patient in diagnosed with internal bleeding muscular pain, anemia, blockage of intestinal passage. He is most likely suffering from:
Question. The two most important property of malignant tumors are:
(a) metastasis and angiogenesis
(b) metastasis and contact inhibition
(c) metastasis and apoptosis
(d) metastasis and controlled division
Question. Which of the following is an incorrect statement about cannabinoids?
(a) Cannabinoids are the group of chemicals that interact with cannabinoids receptors present mainly in the brain and gastrointestinal tract.
(b) Cannabinoids are naturally obtained from the inflorescence of the Cannabis sativa plant.
(c) Cannabinoids includes marijuana, hashish, charas and ganja.
(d) Cannabinoids are generally taken by inhalation and oral ingestion, which affect the cardiovascular system of the body.
Question. Select the set of correct statements.
P. Metastasis is not the property of benign tumours.
Q. Cancer cannot be induced by chemical agents.
R. Biopsy and histopathological studies are important tools for the diagnosis of cancer.
(a) P, Q
(b) Q, R
(c) P, R
Question. Given the leaves are of a plant which is a source of:
Question. An antibody molecule is represented as H2L2. This implies that
(a) Each antibody has four antigen-binding sites.
(b) Each antibody molecule has four peptide chains two small called light chains and two longer called heavy chains.
(c) There are 2 interchain disulphide bonds.
(d) There are 2 intrachain disulphide bonds.
Question. A person likely to develop tetanus us immunized by administering
(a) performed antibodies
(b) wide spectrum antibotics
(c) weakened germs
(d) dead germs.
Question. The term ‘Health’ is defined in many ways. The most accurate definition of the health would be:
(a) Health is the state of body and mind in a balanced condition
(b) Health is the reflection of a smiling face
(c) Health is a state of complete physical, mental and social well-being
(d) Health is the symbol of economic prosperity.
Question. The clinical test that is used for diagnosis of typhoid is
Question. Which of the following glands is large sized at birth but reduces in size with ageing?
Question. Haemozoin is a
(a) precursor of hemoglobin
(b) toxin released from Streptococcus infected cells
(c) toxin released from Plasmodium infected cells
(d) toxin released from Haemophilus infected cells
Question. Which of the following is not the causal organism for ringworm?
Question. HIV that causes AIDS, first starts destroying
(a) helper T-lymphocytes
Question. Antibodies in our body are complex
Question. LSD is obtained from
(a) Erythroxylum coca
(b) Cannabis sativa
(c) Claviceps purpurea
(d) Papaver somniferum
Question. Diseases are broadly grouped into infectious and non-infectious diseases.
In the list given below, identify the infectious diseases.
(i) Cancer (ii) Influenza (iii) Allergy (iv) Small pox
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (ii) and (iv)
Question. The sporozoites that cause infection when a female Anopheles mosquito bites a person, are formed in
(a) liver of the person
(b) RBCs of mosquito
(c) salivary glands of mosquito
(d) gut of mosquito
Question. Dengue in humans is caused by
Question. The disease chikungunya is transmitted by
(a) house fly
(b) Aedes mosquito
(d) female Anopheles
Question. Many diseases can be diagnosed by observing the symptoms in the patient. Which group of symptoms are indicative of pneumonia?
(a) Difficulty in respiration, fever, chills, cough, headache
(b) Constipation, abdominal pain, cramps, blood clots
(c) Nasal congestion and discharge, cough, constipation, headache
(d) High fever, weakness, stomach pain, loss of appetite and constipation
Question. In malignant tumors, the cells proliferate, grow rapidly and move to other parts of the body to form new tumors. This stage of disease is called
Question. When an apparently healthy person is diagnosed as unhealthy by a psychiatrist, the reason could be that
(a) the patient was not efficient at his work
(b) the patient was not economically prosperous
(c) the patient shows behavioural and social maladjustment
(d) he does not take interest in sports
Question. Which of the following are the reason(s) for rheumatoid arthritis? Choose the correct option.
(i) The ability to differentiate pathogens or foreign molecules from self cells increases.
(ii) Body attacks self cells
(iii) More antibodies are produced in the body
(iv) The ability to differentiate pathogens or foreign molecules from self cells is lost
(a) (i) and (ii)
(b) (ii) and (iv)
(c) (iii) and (iv)
(d) (i) and (iii)
Question. B-lymphocytes are associated with
(a) Humoral immunity
(b) Inflammatory response
(c) Cell mediated immunity
Question. The substance produced by a cell in viral infection that can protect other cells from further infection is
Question. Lysozyme that is present in perspiration, saliva and tears, destroys
(a) certain types of bacteria
(b) all viruses
(c) most virus-infected cells
(d) certain fungi
Question. Increased asthmatic attacks in certain seasons are related to
(a) eating fruits preserved in tin containers
(b) inhalation of seasonal pollen
(c) low temperature
(d) hot and humid environment.
Question. To which type of barriers under innate immunity, do the saliva in the mouth and the tears from the eyes, belong?
(a) Physiological barriers
(b) Physical barriers
(c) Cytokine barriers
(d) Cellular barriers
Question. Transplantation of tissues/organs to save certain patients often fails due to rejection of such tissues/organs by the patient. Which type of immune response is responsible for such rejections?
(a) Auto-immune response
(b) Humoral immune response
(c) Physiological immune response
(d) Cell-mediated immune response
Question. Which of the following antibodies form innate immunity?
Question. Tobacco consumption is known to stimulate secretion of adrenaline and nor-adrenaline. The component causing this could be
(b) tannic acid
Question. Which of the following is not a lymphoid tissue?
Question. In which of the following disease, there is always a time lag between the infection and appearance of the symptoms of that particular disease?
Question. Which of the following disease is confirmed by ‘widal test’?
Question. The toxic substance, ‘haemozoin’, related to the high fever and chill, is released during which of the following disease?
Question. Malignant malaria is caused by the which of the following species of Plasmodium ?
Question. Which of the following is the most accurate definition of infection?
(a) The presence of microorganism in a particular location.
(b) The disruption of normal host functions by microorganisms.
(c) The survival and reproduction of microorganisms in a host.
(d) The appearance of symptoms in a host, caused by microorganisms.
Question. Which is not immunity related disease ?
(a) AIDS |
(d) Small pox
Question. A person suffering from a disease caused by Plasmodium experiences recurring chill and fever at the time when
(a) The sporozoites released from RBCs are being rapidly killed and broken down inside speen.
(b) The trophozoites reach maximum growth and give out certain toxins.
(c) The parasite after its rapid multiplication inside RBCs ruptures them, releasing the stage to enter fresh RBCs.
(d) The microgametocytes and megagametocytes are being destroyed by the WBCs.
Question. Which of the following non-infectious disease is a major cause of death in human beings?
Question. Which of the following endocrine glands is often referred in relation with AIDS?
Question. Identify the site where Wuchereria bancrofti is normally found on human body.
(a) Lymphatic vessels of the lower limbs
(b) Muscles of the legs
(c) Blood vessels of the thigh region
(d) Skin between the fingers
Question. Infection of Ascaris usually occurs by
(a) eating imperfectly cooked pork.
(b) tse-tse fly.
(c) mosquito bite.
(d) drinking water containing eggs of Ascaris.
Question. Food poisoning is caused by
(a) Entamoeba histolytica
(b) Escherichia coli
(c) Clostridium botulinum
(d) Corynebacterium diphtheriae
Question. Cancer cells are more easily damaged by radiation than normal cells because they are
(b) starved of mutation
(c) different in structure
(d) undergoing rapid division
Question. Opium is obtained from
(a) Papaver somniferum
(b) Rauwolfia serpentina
(c) Cannabis sativus
(d) Claviceps purpurea
Question. From which part of Atropa belladonna is the drug’belladona’ obtained?
(d) Dried leaves and roots
Question. Hormone produced against allergic reaction is
Question. Narcotic drugs like charas, bhang and ganja are extracted from
(a) hemp plant
(b) coco plant
(c) poppy seeds
Question. Techniques like radiography (use of X-rays), CT scanning nd MRI are very useful to detect
(a) autoimmune disorders.
(b) disease caused by viral infection.
(c) disease caused by bacterial infection.
(d) disease caused by an uncontrolled division of abnormal cells of internal organs.
Question. Hashish and charas are obtained from
(a) Rauwolfia serpentina
(b) Cannabis sativus
(c) Papaver somniferum
(d) Claviceps purpurea
Question. Opium is obtained from which part of the plant Papaver somniferum ?
(b) Male part (dried)
(c) Seed (unripe)
Question. Atropine, an alkaloid, is obtained from
(a) Datura anaroxia
(b) Atropa belladonna
(c) Hyocyamus niger
(d) Withania somnifera
Question. Vaccines produced through genetic engineering are considered safe because they
(a) are active form of antigens.
(b) are the least active forms.
(c) contain antibodies for coat proteins only.
(d) contain antibodies against whole antigen.
Question. Ergot, a drug is derived from fungus
Question. A certain patient is suspected to be suffering from acquired immuno deficiency syndrome. Which diagnostic technique will you recommend for its detection?
Question. Cirrhosis of the liver is caused by
Question. Common cold differs from pneumonia because
(a) pneumonia is a communicable disease, whereas the common cold is a nutritional deficiency disease
(b) pneumonia can be prevented by a live attenuated bacterial vaccine, whereas the common cold has no effective vaccine
(c) pneumonia is caused by a virus, while the common cold is caused by the bacterium, Haemophilus influenzae
(d) pneumonia pathogen infects alveoli, whereas the common cold affects nose and respiratory passage but not the lungs
Question. Consider the following statements.
I. IgE antibodies are produced in an allergic reaction.
II. B-lymphocytes mediate cell-mediated immunity.
III. The yellowish fluid colostrum has abundant IgE antibodies.
IV. Spleen is a secondary lymphoid organ.
Choose the correct option.
(a) Only I is correct
(b) I and II are correct
(c) II and III are correct
(d) I and IV are correct
Question. Where will you look for the sporozoites of the malarial parasite?
(a) RBCs of humans suffering from malaria
(b) Spleen of infected person
(c) Salivary glands of freshly moulted female Anopheles mosquito
(d) Saliva of infected female Anopheles mosquito
Question. Vaccination protects a person from disease because it
(a) helps in better digestion
(b) increases RBC count
(c) stimulates production of antibodies
(d) improves healing system
Question. …………… is a complete state of physical, mental and social well-being of a person.
Question. Which one of the following disease is spread by housefly?
Question. Smoking addiction is harmful because smoke produces polycyclic aromatic hydrocarbons, which cause
(a) reduction in oxygen transport
(b) increase in blood pressure
(d) retardation of growth of foetus
Question. The group of diseases carried (transmitted) by insects are
(a) typhoid, jaundice, tuberculosis
(b) mumps, measles, smallpox
(c) scabies, ringworm, swine flu
(d) malaria, filaria, yellow fever
Question. Disease which can easily transmit from one person to another is called
(a) non-infectious disease
(b) infectious disease
(c) viral disease
(d) congenital disease
Question. The following table shows certain diseases, their causative organisms and symptoms.
The correct option regarding A, B, C and D is
(a) A–Wuchereria, B–Salmonella typhi, C–Common cold, D–Internal bleeding, fever, anaemia
(b) A–Salmonella typhi, B–Ascaris, C–Typhoid, D–Stomach pain, headache
(c) A–Ascaris, B–Entamoeba histolytica, C–Pneumonia, D–Constipation, fever
(d) A–Entamoeba histolytica, B–Salmonella typhi, C–Common cold, D–Nasal discharge, high fever
Question. Which of the following immune responses is responsible for rejection of kidney graft?
(a) Humoral immune response
(b) Inflammatory immune response
(c) Cell-mediated immune response
(d) Autoimmune response
Question. Choose the correct option regarding a antibody.
(a) IgA–Helps in allergic reaction
(b) IgG–Cross placenta
(c) IgE–Found in secretions
(d) IgM–Exists as dimer
Question. Match the following columns.
(a) A – 1, B – 2, C – 3
(b) A – 3, B – 2, C – 1
(c) A – 3, B – 1, C – 2
(d) A – 1, B – 3, C – 2
Question. Opioids are drugs that bind to specific opioid receptors present in our
(a) central nervous system
(b) urinogenital system
(c) gastrointestinal tract
(d) Both (a) and (c)
Question. Active immunity development is related to
(a) natural killer cells
(b) memory cells
(c) helper T-cells
(d) suppressor T-cells
We hope the above multiple choice questions for Class 12 Biology for Chapter 8 Human Health and Diseases provided above with answers based on the latest syllabus and examination guidelines issued by CBSE, NCERT and KVS are really useful for you. Human Health and Diseases is an important chapter in Class 12 as it provides very strong understanding about this topic. Students should go through the answers provided for the MCQs after they have themselves solved the questions. All MCQs have been provided with four options for the students to solve. These questions are really useful for benefit of class 12 students. Please go through these and let us know if you have any feedback in the comments section.