Answer:
by the genes of their parents
Explanation:
The cell membrane proteins are attached to the inside :)
Option A, C, D and E are applied.
<h3><u>Explanation:</u></h3>
Cancer is a disease in humans where there's uncontrolled cell division which doesn't stop in absence of a inhibition.
Cancer cells do show different characteristics which are different from the normal cells. Firstly, they doesn't show contact inhibition. They don't stop dividing inspite of contact with the surrounding cell from each side. This results in the Tumour or nodule formation.
Secondly, they secrete factors which supports growth of new blood vessels around the tumours. They are called angiogenesis promoting factors.
Thirdly, they divide very rapidly, much higher than normal cells. So the biopsy slide with frequent mitotic figures are very common. And these cells lack telomerase, which leads them to live much longer than what is expected lifespan of a normal cell. They don't even need a growth signal for their division.
Answer:
Proteins have four levels of organization. Primary structure refers to the linear sequence of the amino acids connected by the peptide bonds. The secondary structure consists of local packing of polypeptide chain into α-helices and β-sheets due to hydrogen bonds between peptide bond – central carbon backbone.
Explanation:
It's volume increases much more rapidly than it's surface area.