A sexually transmitted disease, symptomized by development of ulcers on genitals, is caused by infec

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7.Human Health and Disease

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A sexually transmitted disease, symptomized by the development of ulcers on the genitals, is caused by the infection of

Treponema pallidum

Neisseria gonorrhoeae

Human Immunodeficiency Virus

Hepatitis$-B$ virus

Solution

Syphilis is caused by Treponema pallidum, a spirochaete and spread by sexual contact. The symptoms include sores or painless ulcers on lips, fingers, nipples, penis, and vagina, etc. It is highly infectious.

Standard 12

Biology

In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the following questions.

$(a)$ Fill in $(A)$ and $(B)$

$(b)$ Why is the virus called retrovirus ?

$(c)$ Can the infected cell survive while viruses are being replicated and released ?

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Which are represented as $H_2L_2$ from given below?

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Vibrio cholerae is a motile bacteria belonging to the group of

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(AIPMT-1990)

Which of the disease is not transmitted by house flies

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Large group of lymphoid tissue in respiratory, digestive and urogenital tract are collectively called

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A sexually transmitted disease, symptomized by the development of ulcers on the genitals, is caused by the infection of

Solution

Similar Questions

In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the following questions. $(a)$ Fill in $(A)$ and $(B)$ $(b)$ Why is the virus called retrovirus ? $(c)$ Can the infected cell survive while viruses are being replicated and released ?

Which are represented as $H_2L_2$ from given below?

Vibrio cholerae is a motile bacteria belonging to the group of

Which of the disease is not transmitted by house flies

Large group of lymphoid tissue in respiratory, digestive and urogenital tract are collectively called

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In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the following questions.

$(a)$ Fill in $(A)$ and $(B)$

$(b)$ Why is the virus called retrovirus ?

$(c)$ Can the infected cell survive while viruses are being replicated and released ?