Question

1. which form of cancer is not likely to develop in a person who uses smokeless tobacco?

• 2 points

o cancer of the pancreas
o oral cancer
o lung cancer
o cancer of the larynx

1. the addictive drug found in tobacco leaves *

2 points
o nicotine
o carcinogen
o tobacco
o carbon dioxide

Explanation:

For question 15: Smokeless tobacco is not inhaled into the lungs. Lung cancer is mainly associated with inhaling harmful substances (like in smoking). While smokeless tobacco can cause cancers in areas like the mouth (oral cancer), pancreas, and larynx (due to local exposure and systemic effects of tobacco components), it does not directly expose the lungs in the same way as smoking.
For question 16: Nicotine is the addictive drug in tobacco. Carcinogen refers to cancer - causing substances (not the addictive drug). Tobacco is the plant material. Carbon dioxide is a common gas and not the addictive component of tobacco.

Answer:

1. Lung cancer
2. Nicotine