Hello!
The medical history states that the patient has been exposed to air pollution, asbestos, and radiation. In addition to this, the patient smoked for 30 years. Presented with this information, one can conclude that the factor that contributed the most to the development of lung cancer would be smoking.
So, the answer to the question is that the habit of smoking had the greatest impact on the development of his cancer.
Hope this helps!
Answer:
The correct answer is A. The cell membrane is both hydrophilic and hydrophobic due to the presence of phospholipid.
Explanation:
98% of the lipids present in cell membranes are amphipathic, that is, they have a hydrophilic end (which has affinity and interacts with water) and a hydrophobic end (which repels water). The three main types of lipids in eukaryotic membranes are phospholipids, sphingoglucolipids and steroids (especially cholesterol); It is worth mentioning that phosphoglycerides and sphingolipids are found in all cells. The latter, glycolipids and steroids, do not exist or are scarce in the plasma membranes of prokaryotic cells, fungi and some protists. There are also neutral fats, which are non-amphipathic lipids, but only represent 2% of the total membrane lipids.
