NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
uncontrolled cell growth = ____
A
apoptosis
B
cancer
C
spindle
D
cytokinesis
Explanation: 

Detailed explanation-1: -Cancer is a disease caused when cells divide uncontrollably and spread into surrounding tissues. Cancer is caused by changes to DNA. Most cancer-causing DNA changes occur in sections of DNA called genes. These changes are also called genetic changes.

Detailed explanation-2: -Cancer is an uncontrolled growth of cells leading to phenotypic expression in many forms, from mild to life-threatening. Cancer can develop in many ways, either from DNA damage, a mutation in the DNA or any product of that DNA, or by loss of function of the regulatory and repressor systems in the cycle.[9]

Detailed explanation-3: -Cancer is the result of unchecked cell division caused by a breakdown of the mechanisms regulating the cell cycle. The loss of control begins with a change in the DNA sequence of a gene that codes for one of the regulatory molecules. Faulty instructions lead to a protein that does not function as it should.

Detailed explanation-4: -Cancer is essentially a disease of mitosis-the normal ‘checkpoints’ regulating mitosis are ignored or overridden by the cancer cell. Cancer begins when a single cell is transformed, or converted from a normal cell to a cancer cell.

There is 1 question to complete.