Question

station 1 - cell cycle & instructio
cells divide as part of the cell cycle, but
division must be controlled. dna provides the
instructions that tell a cell when to divide, how
fast to divide, and when to stop dividing.

if cells divided without instructions, tissues
would grow incorrectly and damage could
spread.

questions:

1. why is it important that cell division is

controlled?

1. what molecule gives instructions for cell

division?

1. how does dna help control the cell cycle?

1. what could happen if dna instructions

were ignored?

sentence starter:
cell division depends on dna because
.

Explanation:

1. Controlled cell division ensures tissues and organs develop and function properly, preventing abnormal growth.
2. The text explicitly states this molecule provides cell division instructions.
3. DNA acts as the source of regulatory instructions for key cell cycle checkpoints and timing.
4. The text describes the consequence of unregulated cell division from ignored DNA instructions.
5. The sentence starter is completed by linking DNA's role as the provider of cell cycle control instructions.

Answer:

1. To prevent incorrect tissue growth and damage spread, and ensure proper cell and tissue function.
2. DNA
3. DNA provides specific instructions that tell a cell when to divide, how fast to divide, and when to stop dividing, regulating the cell cycle.
4. Tissues would grow incorrectly, and damage or abnormal growth (like cancer) could spread.
5. Cell division depends on DNA because it provides the critical instructions that control when cells divide, how quickly they divide, and when they stop dividing to maintain proper tissue function and prevent harmful abnormal growth.