AP BIOLOGY

CELL DIVISION

CELL DIVISION AND CANCEROUS CELLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following would cause a cell to enter the cell cycle to go through mitosis?
A
density dependent inhibition
B
anchorage dependency
C
a growth factor
D
apoptosis
Explanation: 

Detailed explanation-1: -Entry into mitosis is triggered by the activation of cyclin-dependent kinase 1 (Cdk1). This simple reaction rapidly and irreversibly sets the cell up for division.

Detailed explanation-2: -The most basic function of the cell cycle is to duplicate accurately the vast amount of DNA in the chromosomes and then segregate the copies precisely into two genetically identical daughter cells. These processes define the two major phases of the cell cycle.

Detailed explanation-3: -Somatic cells go through mitosis, whereas germ cells go through meiosis, which produces gametes.

Detailed explanation-4: -The cell cycle is controlled by many cell cycle control factors, namely cyclins, cyclin-dependent kinases (Cdks) and cyclin-dependent kinase inhibitors (CKIs). Cyclins and Cdks, which are positive regulators of the cell cycle, activate cell cycle factors that are essential for the start of the next cell cycle phase.

There is 1 question to complete.