Study the diagram showing the entry of HIV into the human body and the processes that are followed:

(a) Name the human cell 'A' HIV enters into.
(b) Mention the genetic material 'B' HIV releases into the cell.
(c) Identify enzyme 'C'

The skeletal structure of a cannabinoid molecule is given above. Answer the following questions.
(a) What are the modes of its consumption by humans?
(b) Name the four different forms in which cannabinoids are produced.

Read the following and answer any four questions from (i) to (v) given below:
Rajesh, Ravi and Rohit are roommates. They are doing their graduation. Few months back Ravi fell ill. It took him around 3 weeks to recover. Both his friends were absolutely healthy at that time. After sometime Rajesh also fell ill from some other disease. This time Ravi and Rohit both contracted the same illness. Based on the above information, answer the following questions.
(i) Which of the following holds true for Ravi's illness?

(ii) Select the correct statement.

(iii) Which could be correctly said for Rajesh's illness?

(iv) Which of the following may depicts Ravi's and Rajeshs illness?

(v) Assertion: Diabetes mellitus is a non-communicable disease which can be completely cured.
Reason: Diabetes mellitus is caused by deficiency of aldosterone hormone.

Read the following and answer any four questions from (i) to (v) given below:
Priya was 4 years old when she contracted chicken pox. It took her around 15 days to recover completely. Now Priya is 5 years old so her mother got her vaccinated few days back for DPT (5th dose) as per immunisation program. Recently she was playing with her friend in the park when her friend accidently fell on iron pipe and badly bruised her knee. She was taken to the hospital where doctor gave her ATS injection and painkillers. Based on the above information, answer the following questions.
(i) Select the correct statement.

(ii) Which of the following do you think is an example of natural passive immunity?

(iii) Which of the following is true for active immunity?

(iv) Select the incorrect match.

(v) Assertion: A person recovered from measles develops an active immunity against this infection.
Reason: In active immunity, person's own cells develop antibodies in response to infection.

Read the following and answer any four questions from (i) to  (v) given below:
A group of teenagers was involved in drug abuse. They used syringes and needles to inject drugs. They indulged in this habit when they became adults. Administration of drug through needles became a piece of cake for them. Raj was the most active drug abuser amongst them and used to take drugs in high profile parties. In a span of time he started losing weight and suffered persistent diarrhoea. He developed constant low grade fever and used to catch opportunistic infection. When he consulted a doctor, he got himself tested for HIV in his blood and finally diagnosed with AIDS.
Based on the above information, answer the following questions.
(i) Select the incorrect statement.

(ii) How do you think Raj got AIDS infection?

(iii) How AIDS can be diagnosed?

(iv) How can AIDS be prevented?

(v) Select the correct statement for AIDS virus.