Which of the follwing is a characteristic of cancerous cells? A Regulation of cyclin and CDK levelsRegulation of cyclin and CDK levels

B Exhibition of proper contact inhibitionExhibition of proper contact inhibition

C Activation of oncogenesActivation of oncogenes

D Adherence to cell cycle checkpoints

D

Explanation:

Cancer cells exhibit uncontrolled and disorganized growth. Formation of new blood vessels is required to bring nutrients and oxygen to cancerous tumors. Cancer cells cannot enter the cell cycle and therefore are mortal. cancer cells enter the cell cycle repeatedly, and in this way they are immortal.

i believe the answer is c

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: