CELL DIVISION
THE CELL CYCLE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
replace cells that have died.
|
|
|
create new chromosomes.
|
|
|
obtain energy from sunlight.
|
|
|
release energy from food.
|
Detailed explanation-1: -When cells become damaged or die the body makes new cells to replace them. This process is called cell division. One cell doubles by dividing into two. Two cells become four and so on.
Detailed explanation-2: -Mitosis is the reason we can grow, heal wounds, and replace damaged cells. Mitosis is also important in organisms which reproduce asexually: this is the only way that these cells can reproduce. This is the one key process that sustains populations of asexual organisms.
Detailed explanation-3: -Cells produce new cells by cell division. Cell division is required for growth, repair, regeneration and reproduction. Eukaryotic cells divide by mitosis and meiosis cell division. Prokaryotic cells divide by binary fission.
Detailed explanation-4: -The cell cycle is a set of steps that take place in cell division. The cell cycle is how cells duplicate and divide. Cells need to divide all the time to replace dead cells, for growth and for repair.
Detailed explanation-5: -Mitosis creates identical copies of cells. For example, it creates new skin cells to replace dead skin cells. Gametes are the cells needed for reproduction.