tiv) develops into a fruitQ 11 (a) Explain the importance of placenta

1.	tiv) develops into a fruitQ 11 (a) Explain the importance of placenta in the development of human embryo.(b) Give illustration of two sexually transmitted diseases each, transmitted by bacteria andviruses.(c) What according to you is the most effective contraceptive to prevent spread ot suchdiseases?Marks (5)
Answer» a) Theplacentaplays a keyrolein the nutrition of thefetus. It mediates the active transport of nutrients and metabolic wastes across the barrier separating maternal andfetalcompartments, as well as modifying the composition of some nutrients through its own metabolic activity. b) As the name suggests, a sexually transmitted infection (STI), sometimes called a sexually transmitted disease (STD), is an infection that can be passed on to another person during vaginal, anal or oral sex. Of the 30 or so, eight STIs are particularly common and cause most sexually transmitted illnesses: Chlamydia (bacteria)Genital herpes (virus)Gonorrhea (bacteria)Hepatitis B (virus)Syphilis (bacteria)HIV (Human Immunodeficiency Virus)Trichomoniasis (parasite)HPV (Human Papilomavirus) c) Condoms reduce the risk of spreading sexually transmittedinfections. The most effectiveway toavoidgetting an STI is to not have sex. Like my answer if you find it useful!

tiv) develops into a fruitQ 11 (a) Explain the importance of placenta in the development of human embryo.(b) Give illustration of two sexually transmitted diseases each, transmitted by bacteria andviruses.(c) What according to you is the most effective contraceptive to prevent spread ot suchdiseases?Marks (5)

Answer»

a) Theplacentaplays a keyrolein the nutrition of thefetus. It mediates the active transport of nutrients and metabolic wastes across the barrier separating maternal andfetalcompartments, as well as modifying the composition of some nutrients through its own metabolic activity.

b) As the name suggests, a sexually transmitted infection (STI), sometimes called a sexually transmitted disease (STD), is an infection that can be passed on to another person during vaginal, anal or oral sex. Of the 30 or so, eight STIs are particularly common and cause most sexually transmitted illnesses:

Chlamydia (bacteria)Genital herpes (virus)Gonorrhea (bacteria)Hepatitis B (virus)Syphilis (bacteria)HIV (Human Immunodeficiency Virus)Trichomoniasis (parasite)HPV (Human Papilomavirus)

c) Condoms reduce the risk of spreading sexually transmittedinfections. The most effectiveway toavoidgetting an STI is to not have sex.

Like my answer if you find it useful!

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