Question

Hello guyzz.. Please answer the following qustions fastly..
Questions from Class 12 CBSE Biology
1. How anamnestic response initiated by immune system?
2. Give the name of two withdrawal symptoms caused by the lack of drug adiction.
3. How tobacco smoking leads to euphoric action in our body?
4. Explain shortly how retrovirus affect t helper cells.

Answer 1

Answer:

2.anxiety,shakiness,nausea

3.Tobacco contains a large number of chemical substances

including nicotine, an alkaloid. Nicotine stimulates adrenal gland to

release adrenaline and nor-adrenaline into blood circulation, both of

which raise blood pressure and increase heart rate.so the release of adrenaline and nor adrenaline is responsible for euphoric action

Answer 2

2.anxiety,shakiness,nausea

3.Tobacco contains a large number of chemical substances

including nicotine, an alkaloid. Nicotine stimulates adrenal gland to

release adrenaline and nor-adrenaline into blood circulation, both of

which raise blood pressure and increase heart rate.so the release of adrenaline and nor adrenaline is responsible for euphoric action