Name the substance in tobacco smoke that causes each effect…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Name the substance in tobacco smoke that causes each effect.
- The blood pressure and the heart rate rise, because the adrenal glands release hormones.
- The blood carries less oxygen.
- A risk of cancer of the lung, the throat and the urinary bladder.
- Name the two hormones of part (a).
- Name one disease of the lungs, other than cancer, that smoking causes.
Need a reminder? The key ideaShow
Opioids, cannabinoids and coca alkaloids are the commonly abused drugs. Morphine comes from Papaver somniferum, and heroin is made from it by acetylation. Cocaine comes from Erythroxylum coca. In smoke, nicotine raises the blood pressure and the heart rate, and carbon monoxide binds to haemoglobin. Each gram of free haemoglobin carries about mL of oxygen.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) Nicotine.
Step 2. (b) Carbon monoxide, which binds to haemoglobin.
Step 3. (c) The carcinogens of the smoke, such as tar.
Step 4. (d) Adrenaline and noradrenaline.
Step 5. (e) Bronchitis or emphysema.
Answer: (a) nicotine; (b) carbon monoxide; (c) carcinogens in the smoke; (d) adrenaline and noradrenaline; (e) bronchitis or emphysema.
Discussion (0)
Log in to join the discussion.
Loading…