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In the following question, there are two statements, Assertion (A) and Reason (R). Consider both the statements independently and mark your answer as: 1. If A and R both are correct and R is the correct explanation of A 2. If A and R both are correct and R is not the correct explanation of A 3. If A is correct and R is incorrect 4. If A is incorrect and R is correct
Assertion (A): Human immunodeficiency virus is spherical with a diameter of about 90-120 nm. Reason (R): Its genome consists of single-stranded DNA associated with reverse transcriptase enzyme.
Human immunodeficiency virus (HIV) is spherical with a diameter of about 90-120 nm. Genome of HIV is made up of single stranded RNA.
Match the following:
Tranquilisers - Phenothiazenes Opiate narcotics - Morphine Stimulants - Cocaine Hallucinogens - Marijuana
Match Column – I (hallucinogen) with Column – II (source) and select the correct option.
Marijuana is a hallucinogen obtained from dried flowering tops of Cannabis sativa. Mescaline is a hallucinogen obtained from dried tops of Lophophora williamsii. Lysergic acid diethylamide (LSD) is a hallucinogen obtained from fruiting bodies of Claviceps purpurea. Psilocybin is a hallucinogen obtained from fruiting bodies of Psilocybe mexicana.
Which of the following hallucinogens are obtained from hemp plant? 1. Bhang 2. Ganja 3. Charas 4. Marijuana 5. Mescaline 6. LSD 7. Psilocybin
Bhang, ganja, charas and marijuana are hallucinogens obtained from hemp plant (Cannabis indica and Canabis sativa).
Which of the following statements is/are false? 1. IgEs are most abundant immunoglobulins 2. IgGs are the only antibody to cross placenta. 3. IgMs are largest immunoglobulins.
IgGs are most abundant immunoglobulins (80% of the total Igs) whereas IgEs are the least abundant immunoglobulins (0.1% of the total Igs).
Which of the following is not an RNA virus?
Herpes virus is one of the viruses of a family of double-stranded DNA viruses. The structure of herpes viruses consists of a relatively large, double-stranded, linear DNA genome encased within an icosahedral protein cage called the capsid, which is wrapped in a lipid bilayer called the envelope. The envelope is joined to the capsid by means of a tegument. This complete particle is known as the virion.
Chronic inflammation of eye occurs in the case of
Trachoma is an infectious disease caused by bacterium Chlamydia trachomatis. The infection causes a roughening of the inner surface of the eyelids. This roughening can lead to pain in the eyes, breakdown of the outer surface or cornea of the eyes, and eventual blindness. Blinding endemic trachoma results from multiple episodes of reinfection that maintains the intense inflammation in the conjunctiva. Without reinfection, the inflammation will gradually subside. The conjunctival inflammation is called "active trachoma" and usually is seen in children.
Polio is caused by
Polio, also called poliomyelitis or infantile paralysis, is an infectious disease caused by the poliovirus. Paramyxovirus causes mumps. Varicella (also called chickenpox) is a very contagious viral disease. It is caused by the varicella zoster virus. Measles is caused by infection with the rubeola virus.
Which of these viral diseases in humans is caused by a DNA virus?
Smallpox is caused by poxvirus, it is a DNA virus. The common cold is caused by over 200 virus strains, with rhinoviruses being the most common, which is a single-stranded positive sense RNA genome of between 7200 and 8500 nt in length. Mumps is an acute, self-limited, systemic viral illness characterized by the swelling of one or more of the salivary glands, typically the parotid glands. The illness is caused by the RNA virus, Rubulavirus. Measles is caused by the measles virus, a single-stranded, negative-sense, enveloped RNA virus of the genus Morbillivirus within the family Paramyxoviridae.
Which of the following is an anaerobic Gram negative coccus?
Veillonella is a Gram-negative anaerobic coccus. This bacterium is well known for its lactate fermenting abilities. It is a normal bacterium in the intestines and oral mucosa of mammals. In humans, these bacteria have been rarely implicated in cases of osteomyelitis and endocarditis, e.g. with the species Veillonella parvula.
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