CBSE Class 12 Biology Human Health and Disease MCQs Set 07

Question: The cytotoxic cells are produced by
a) T-Cells
b) B-Cells
c) memory Cells
d) mast Cells
Answer: a

Question: Morphine is obtained from which plant part
a) Seed
b) Root
c) Leaves
d) None of the options
Answer: d

Question: Smack acts on body as a
a) Immunomodulator
b) Depressant
c) Antidepressant
d) Brochodilator
Answer: b

Question: Antigens are present
a) inside the nucleus.
b) on cell surface.
c) inside the cytoplasm.
d) on the nuclear membrane.
Answer: b

Question: Which of the following plant have hallucinogenic property?
a) Datura
b) Atropa belladona
c) Erythroxylum coca
d) All of these
Answer: d

Question: The foetus gets immunized after receiving antibodies from mother through placenta. This type of immunization is called
a) active immunity
b) innate immunity
c) passive immunity
d) humoral immunity
Answer: c

Question: Addiction is which type of effect
a) Physiological
b) Psychological
c) Pathological
d) None of the options
Answer: b

Question: Nicotine is a
a) Protein
b) Lipid
c) Alkaloid
d) None of the options
Answer: c

Question: Methadone is used for
a) narcotic
b) relieving chronic pain
c) deaddiction of morphine and heroin
d) all of the above
Answer: d

Question: Find the incorrect pair out
a) Culex — malaria
b) Xenopsylla — plague
c) Aedes — yellow fever
d) Phlebotomus — kala-azar
Answer: a

Question: Amphetamines are central nervous-system stimulants. Barbiturates are
a) CNS stimulants
b) no effect on CNS
c) hallucinogenic
d) CNS depressant
Answer: d

Question: Disease which occurs due to malfunctioning of organs is
a) deficiency disease
b) degenerative disease
c) allergic disease
d) hereditary disease
Answer: b

Question: The principle of vaccination is based upon which property of immune system ?
a) Memory
b) Diversity
c) Specificity
d) All of these
Answer: a

Question: Cocaine is basically a
a) Protein
b) Lipid
c) Alkaloid
d) None of the options
Answer: c

Question: Common approach for cancer treatment is
a) Surgery
b) Radiation therapy
c) Immunotherapy
d) All of these
Answer: d

Question: Which of the following vaccine has been produced from yeast by recombinant DNA technology ?
a) Hepatitis A
b) Hepatitis B
c) Hib
d) Oral polio
Answer: b

Question: Inflammatory response in allergy is caused by
a) histamines
b) antigen
c) prothrombin
d) antibodies
Answer: a

Question: Natural cannabinoid are obtained from which plant part
a) Stem
b) Root
c) Inflorescence
d) None of the options
Answer: c

Question: Where are opioid receptors present in the body?
a) Lungs
b) Central nervous system
c) Gastrointestinal system
d) Both (b) and (c)
Answer: d

Question: The exaggerated response of the immune system to certain antigens is called
a) primary response
b) secondary response
c) immune suppression response
d) allergy
Answer: d

Question: Which of the following diagnostic tests are not used for cancer detection in internal organs?
a) Computed tomography
b) Magnetic resonance imaging
c) Blood test
d) Radiography
Answer: c

Question: Cannabinoids are taken by
a) Inhalation
b) Oral ingestion
c) Massage on skin
d) Both Inhalation and Oral ingestion
Answer: d

Question: Organ transplant rejection may be prevented by using
a) antibodies
b) new T cells
c) immunosuppressive drug
d) immunostimulatory drug
Answer: c

Question: Synthetic drugs structurally related to adrenaline are
a) amphetamines
b) barbiturates
c) hallucinogens
d) analgesics
Answer: a

Question: Continued exposure to vinylchloride (VC) may cause cancer to the
a) vagina
b) skin
c) liver
d) prostate gland
Answer: c

Question: Human immuno deficiency virus (HIV) has a protein coat and a genetic material which is
a) Single stranded DNA
b) Single stranded RNA
c) Double stranded RNA
d) Double stranded DNA
Answer: b

Question: Excessive consumption of alcohol mainly leads to
a) state of hallucination
b) loss of memory
c) suppression of brain function
d) cirrhosis of liver
Answer: d

Question: An autoimmune disease is
a) rheumatoid arthritis
b) multiple sclerosis
c) insulin dependent diabetes
d) all of these
Answer: d

Question: Artificial immunity can be acquired from a
a) serious illness
b) vaccination
c) repeated exposure to the same microbe
d) treatment with penicillin
Answer: b

Question: Most bacteria ingested with food are killed by
a) cilia and mucus on the lining of the tract
b) stomach acids
c) the intrinsic factor in the stomach
d) bile in the small intestine
Answer: b

Question: Which of the following is a pair of viral diseases?
a) common cold, AIDS
b) dysentery, common cold
c) typhoid, tuberculosis
d) ringworm, AIDS
Answer: a

Question: Which of the following blood groups enables a person to give blood to any person?
a) A+
b) B-
c) AB+
d) O-
Answer: d

Question: Lymphocytes that cause the formation of holes in plasma membranes are
a) B cells
b) killer (cytotoxic) T cells
c) suppressor cells
d) helper cells
Answer: b

Question: Blood vessels near a wound dilate and become more permeable in response to which material released from damaged cells?
a) pyrogens
b) antibodies
c) histamine
d) interferons
Answer: c

Question: Vaccination of malaria is not possible because
a) they produce antibodies and antitoxins
b) they do not produce antibodies and antitoxins
c) antibodies resistant to vaccines are produced
d) none of the above
Answer: b

Question: Which is not immunity related disease?
a) AIDS
b) Polio
c) Cancer
d) Small pox
Answer: c

Question: Which of the following lymphoid organ provides the site for the interaction of lymphocytes with the antigen?
a) Bone marrow
b) Thymus
c) Spleen
d) All of these
Answer: c

Question: Messenger molecules, released by virus-infected cells, that bind to the surfaces of healthy cells and stimulate them to synthesize proteins that prevent viral reproduction are called
a) interferons
b) antibiotics
c) cytotoxins
d) lymphokines
Answer: a

Question: Untreated victims of severe combined immunodeficiency usually die from
a) infections that in other people are minor
b) anaphylactic shock
c) congested lungs
d) unusually high fever
Answer: a

Question: Which of the following is an autoimmune disease?
a) Asthma
b) Rheumatoid arthritis
c) Cirrhosis
d) AIDS
Answer: b