TOBACCO SMOKING
Tobacco is smoked in cigarettes, cigars and pipes. Research shows that tobacco related diseases kill nearly 13 500 people worldwide every day. It is predicted that, by 2020, tobacco-related diseases will cause 12% of all deaths globally. Tobacco smoke contains many harmful substances. The most damaging substances are tar, nicotine and carbon monoxide.
Question1
Tobacco smoke is inhaled into the lungs. Tar from the smoke is deposited in the lungs and this prevents the lungs from working properly. Which one of the following is a function of the lungs?
a .To pump oxygenated blood to all parts of your body.
b. To transfer oxygen from the air that you breathe to your blood .
c .To purify your blood by reducing the carbon dioxide content to zero.
d .To convert carbon dioxide molecules into oxygen molecules .
Question2
Tobacco smoking increases the risk of getting lung cancer and some other diseases. Is the risk of getting the following diseases increased by tobacco smoking?
Circle “Yes” or “No” in each case. Is the risk of contracting this disease increased by smoking? Yes or No?
a. Bronchitis Yes / No
b. HIV/AIDS Yes / No
c. Chicken pox Yes / No
Question3
Some people use nicotine patches to help them to give up smoking. The patches are put on skin and release nicotine into the blood. This helps to relieve cravings and withdrawal symptoms when people have stopped smoking. To study the effectiveness of nicotine patches, a group of 100 smokers who want to give up smoking is chosen randomly. The group is to be studied for six months. The effectiveness of the nicotine patches is to be measured by finding out how many people in the group have not resumed smoking by the end of the study. Which one of the following is the best experimental design?
a. All the people in the group wear the patches.
b. All wear patches except one person who tries to give up smoking without them.
c. People choose whether or not they will use patches to help give up smoking.
d.Half are randomly chosen to use patches and the other half do not use them.
Question4
Which human body organ gets affected by the over consumptions of alcohol the worst
a. Intestine
b. Liver
c. Heart
d. Lungs
Answers
Answer:
a.From the left atrium blood flows into the left ventricle. The left ventricle pumps the blood to the aorta which will distribute the oxygenated blood to all parts of the body.
b. The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell. When oxygen passes into the bloodstream, carbon dioxide leaves it.
c. In a national level exam, a question is asked that which human body organ involved in the purification of blood?
The options are (a) Lungs (b) Kidneys
Can anybody give an answer to clear confusion between lungs and kidney? According to me, lungs is the best answer. The kidney is for filtration.
d. Now, researchers at Caltech claim to have created a reactor that can turn carbon dioxide into molecular oxygen, which could help us fight climate change here on Earth or generate oxygen for life in space. Oxygen is one of the biggest hurdles to human space exploration.
Explanation: