Understanding the Cell Cycle

What is the main purpose of the G1 phase?

• To initiate protein synthesis for cell function.

• To repair damaged DNA before replication.

• The main purpose of the G1 phase is to prepare the cell for DNA replication and ensure it has the necessary resources for cell division.

• To complete the process of mitosis.

How does cell growth in G1 contribute to division?

• Cell growth in G1 leads to apoptosis before division.

• G1 phase is when chromosomes are separated for division.

• G1 phase is primarily for protein synthesis only.

• Cell growth in G1 provides the necessary resources and energy for DNA replication and division.

What key activities occur during the G1 phase?

• DNA replication occurs

• Cell growth, protein synthesis, organelle production, and preparation for DNA replication.

• Chromosome condensation happens

• Cell division takes place

Why is the G1 checkpoint important for the cell?

• The G1 checkpoint is important for ensuring DNA integrity and proper cell growth before DNA replication.

• The G1 checkpoint initiates apoptosis in damaged cells.

• The G1 checkpoint is responsible for nutrient absorption in the cell.

• The G1 checkpoint prevents cell division during mitosis.

What happens to the DNA during the S phase?

• DNA undergoes repair to fix mutations.

• DNA is transcribed into RNA for protein synthesis.

• DNA is replicated, resulting in two identical copies of each chromosome.

• DNA is destroyed, leading to cell death.

Why is DNA replication crucial in the S phase?

• DNA replication helps in protein synthesis.

• DNA replication occurs only in the G1 phase.

• DNA replication is unnecessary for cell division.

• DNA replication is crucial in the S phase to ensure each daughter cell receives an identical set of chromosomes.

What are the consequences of errors during the S phase?

• Consequences include mutations, potential cancer development, and genetic disorders.

• Increased energy production

• Enhanced DNA repair mechanisms

• Improved cell division efficiency

What processes occur during the G2 phase?

• Metabolic processes are halted

• The G2 phase involves preparation for mitosis, including protein synthesis, organelle duplication, DNA repair, and error checking.

• Cell division occurs

• Chromosome replication takes place

How does the G2 phase prepare the cell for mitosis?

• The G2 phase is responsible for the separation of chromosomes.

• The G2 phase is when the cell undergoes apoptosis.

• The G2 phase prepares the cell for mitosis by ensuring DNA replication is complete, repairing any DNA damage, and synthesizing proteins and organelles needed for cell division.

• The G2 phase occurs after mitosis and prepares for the next interphase.

How do the phases of interphase contribute to overall cell health?

• Interphase is solely for nutrient absorption.

• The phases of interphase ensure cell growth, accurate DNA replication, and preparation for mitosis, contributing to overall cell health.

• Interphase only involves cell division.

• The phases of interphase are irrelevant to cell health.