Last seen: Dec 29, 2021
Correct answer: (c) Thymus
Correct answer: (c) antibodies
Correct answer: (b) Aedes mosquitoes
Correct answer: (b) Papaver somniferum
Correct answer: (d) heroin
Correct answer: (b) Ig A
Correct answer: (a) allergy
Correct answer: (c) thymus
Correct answer: (d) cytokine barriers
There are many factors that motivate youngsters to take alcohol or drug. These include: Choosing a good peer group. Discussing ways and means t...
Once a person starts taking alcohol or drugs, it is difficult to get rid of this habit because he becomes addicted to it. Addiction is a psychological...
Yes. This can be avoided by Choosing a good peer group. Discussing ways and means to counteract the presence if any with family elders and teac...
Harmful effects caused by alcohol/drug abuse are as follows: Among youth there is drop in academic performance, lack of interest in personal hygi...
The rapid growth of cancerous tumour causes overcrowding and disruption of normal cells. It extends to neighbouring tissues. In the last stage, bits o...
Cancerous cell As these cells do not possess the property of contact inhibition, they keep dividing. forming a cluster of cells. Do not experienc...
After getting into the body, the virus enters into the macrophages and converts its RNA genome into DNA with the help of a reverse transcriptase enzym...
Various routes of entry of ADDS virus are: Sexual contact with the infected person. Through placenta (from infected mother to foetus). Transf...
figure.png Fig: Structure of an antibody molecule
Active Immunity: (i) It is developed when person's own cells produce antibodies in response to infection or vaccine. (ii) Immunity is not immediat...
Innate Immunity: Non-specific in nature. Present from birth. Has different barriers. For instance, mucus traps bacteria and other particles. E...