The correct answer is (c) Warning labels are required on the packs of cigarettes.
There are more than 7000 chemicals found in cigarettes. Out of which 250 are known to be toxic in nature. One of the primary ingredients of cigarette tobacco is nicotine, which is highly addictive. Due to this even if the smoker want to quit, they crave for it. Smoking can increase the risk of cancer as it has carcinogenic properties. It can also cause emphysema and heart disease. There are warnings on the packs of cigarette that is injurious to health so that the people consuming it can get information about the ill effects. The picture on the pack was made to make people aware that smoking can cause cancer.
Cyclins drive the events of the cell cycle by partnering with a family of enzymes called the cyclin-dependent kinases (Cdks). A lone Cdk is inactive, but the binding of a cyclin activates it, making it a functional enzyme and allowing it to modify target proteins.
3.Even though there are some dna traces in the mitochondria,it’s won’t really be tested for gcse and mostly the DNAs are found in the nucleus of the cell.
