Tag: cancer and aids

Trichomoniasis is a sexually transmitted disease. It is caused by Trichomonas vaginalis.
Malaria is caused by Plasmodium sp and pneumonia by Diplococcus pneumonia. 

Syphilis is a type of sexually transmitted disease , which is caused by a bacteria . It starts as painless sores . It is caused by the bacteria Treponema pallidum . So the correct option is 'syphilis' . 

AIDS, genital herpes and hepatitis B are not completely curable STDs. AIDS is caused by Human Immunodeficiency Virus. Genital herpes is caused by Herpes Simplex Virus and hepatitis B is caused by Hepatitis B Virus.

Confirmatory tests for STDs are culture and microscopic observation with specific staining, detection of specific antigen/antibody using Enzyme Linked Immunosorbent Assay (ELISA), DNA hybridisation and polymerase chain reaction (PCR).

Syphilis is caused by bacterium Treponema pallidum. It is a sexually transmitted disease (STD) which is transmitted through sexual intercourse with infected person. Haemophilia is an X-linked genetic disorder of blood, It is not transmitted via any sexual practice. Genital herpes is an STD while sickle-cell anaemia is an autosomal hereditary disorder. The chances of a 5 years old boy contacting an STD are very rare since he is unlikely to have sex at this age. So, the correct answer is 'The chances of a 5-years boy contracting a STD are very rare'.

• Fluid or tissue scrap taken from the lesions and sores that appear in early stages of disease are used to diagnose if the patient is infected with viral infection or not.
• The stains used are such that it may stain the acidic genetic material present in the rapidly dividing cells of the virus or bacteria
• Since the fluid that is taken from the early lesions that appear on the skin in the early stage of the disease have syncytial condition ie more amount of genetic material is present therefore the staining will take place properly.
• 1% toluidine blue is basic dye that will stain the nucleic acid blue.
• Methylene blue is used to observe microscopic life under the microscope. It usually stains the outer wall or membrane of the organism.
• Alcian blue is used to stain acidic polysaccharide in muscles and tissue in histological studies.
• Coomassie blue is used for studying proteins as it stains the protein band blue color so that it can be observed as blue bands with a clear background as it does not stain any other thing in cell.
• Therefore the option C is correct as toluidine is the only dye her which will stain the acidic genetic material in the dividing cells of the virus.
• So, the correct answer is '1% toluidine blue'
  

STD's are the sexually transmitted disease that can be transferred from one organism to another by the exchange of body fluids.