A p53 gene is the one responsible for preventing a cancer from evolving in an individual's body, it is also a tumor suppressor. If a p53 is damaged, then it could result to cancer, spreading in the entire body and it can also arises tumor growth. So the correct letter of the answer above the following is letter A.
Answer:
The physical and chemical properties of elements are periodic function of their atomic weights. This is Mendeleev's periodic law.
63 elements were classified by Mendeleev.
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Answer:
hi
Explanation:
The mass of the actual tin will remain constant; however I assume you are comparing the mass of the reactant, tin, with the mass of the products. The increase in mass stems from the oxides of tin present due to its reaction with oxygen in the air:
Sn(s) + O2(g) → SnO2(s)
By working out the atomic mass of the tin and the relative formula mass of tin oxide, you can see why there is a mass increase; 119:151. As you can see here, for every 119g of tin reacted, there will be 151g of tin oxide, hence why you think the mass of the tin increased (by 32g).
Hope this helped!
Answer:
1. Atom absorbs energy from a source
2. Electron becomes unstable because it is quantized
3. Electron jumps to a higher energy level
4. Energy is released in the form of light
5. Electron falls to a lower energy level