Assertion: AIDS is caused by the HIV, a retro-virus.
Reason: Retroviruses have RNA genome.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
B.
If both assertion and reason are true but reason is not the correct explanation of assertion.
Retrovirus is an RNA-containing virus that converts its RNA into DNA by means of the enzyme reverse transcriptase. This enables it to become integrated into its host's DNA. Some retroviruses can cause cancer in animals they contain oncogenes (cancer-causing genes), which are activated when the virus enters its host cell and starts to replicate. The special properties of retroviruses make them useful as vectors for inserting genetic material into eukaryotic cells. The best-known retrovirus is HIV, responsible for AIDS in humans.
Assertion: AIDS and hepatitis B are sexually transmitted diseases.
Reason: There is no permanent cure for both of them
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Choose the correctly matched pair from the following.
Gonorrhoea, hepatitis B- sexually transmitted diseases
AIDS, gonorrhoea - viral infection
Diphtheria, ringworm - fungal infection
Diphtheria, tuberculosis - protozoan infection
Identify the give figure and select the correct option
Neutrophil- phagocytic cell which destroy foreign organisms entering the body.
Eosinophil- their number increases during allergic infection.
Lymphocyte - small sized non-motile and non-phagocytic.
Monocyte - motile and phagocytic in nature.
Select the option having all the correct characteristics.
Structure Percentage Function
Structure Percentage Function
Structure Percentage Function
Structure Percentage Function
Which one of the following immune system components does not correctly match with its respective role
Interferons - secreted by virus-infected cells and protect non-infected cells from further viral infection
B-lymphocytes-produces antibodies in response to pathogens into blood to fight with them
Macrophages-mucus secreting cells that trap microbes entering in the body
IgA-present in colostrum in early days of lactation and protect infant from diseases
Which of the following is not a character of cancerous cells in our body
Contact inhibition
Neoplasia
Metastasis
Inability for differentiation
Sexual stage (gametocytes) of Plasmodium occurs in
Salivary glands of mosquito
Human RBC
Intestine of mosquito
Human liver
Assertion: Filarial worm is transmitted to humans by Culex mosquito.
Reason: Culex prefers to breed in fresh water.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
