Questions and Answers
What is the name of your General Biology subject teacher?
Rowie Mae D. Espelita
The two phases of the cell cycle are ______ and M Phase.
Interphase
What is the term for the sequence of events that a cell undergoes to duplicate its genome and divide?
What is the typical duration of the cell cycle in human cells?
Signup and view all the answers
What are the two basic phases of the cell cycle?
Signup and view all the answers
What are the three further phases of interphase?
Signup and view all the answers
What occurs during the G1 phase of the cell cycle?
Signup and view all the answers
What is the role of DNA replication in cell division?
Signup and view all the answers
What might happen if a cell skipped the S phase?
Signup and view all the answers
What happens during the S phase of the cell cycle?
Signup and view all the answers
What is synthesized during the G2 phase in preparation for mitosis?
Signup and view all the answers
What percentage of the cell cycle duration does interphase occupy in human cells?
Signup and view all the answers
What is the quiescent stage (G0) of the cell cycle?
Signup and view all the answers
What is the importance of cell division in living organisms?
Signup and view all the answers
Study Notes
Cell Cycle Overview
- The cell cycle consists of two main phases: Interphase and M Phase (Mitosis).
- Interphase is divided into three further phases: G1, S, and G2.
Phases of Interphase
-
G1 Phase:
- Involves cell growth without DNA replication.
- Cells prepare for DNA synthesis.
-
S Phase:
- DNA synthesis occurs, resulting in DNA doubling.
- Essential for preparing genetic material for cell division.
-
G2 Phase:
- The cell synthesizes proteins and organelles in preparation for mitosis.
M Phase
- M Phase includes mitosis and cytokinesis, where the actual division of the cell occurs.
Duration of the Cell Cycle
- The typical duration of the cell cycle in human cells is approximately 24 hours.
- Interphase occupies more than 95% of the total cycle duration.
Quiescent Stage (G0)
- G0 is an active stage where cells remain metabolically active but do not proliferate, often entered by cells that are not currently dividing.
Importance of Cell Division
- Cell division is vital for reproduction, growth, and repair in living organisms.
- It plays a crucial role in multicellular organisms by facilitating tissue growth and regeneration.
Consequences of Skipping Cell Cycle Phases
- Skipping the S Phase may lead to daughter cells having incomplete genomes.
- Proper replication ensures that daughter cells inherit the correct amount of genetic material.
Control Points in the Cell Cycle
- The cell cycle is regulated by control points that ensure conditions are favorable for progression to the next phase.
- Checkpoints occur at key stages: G1, G2, and during mitosis to prevent errors.
Key Functions of DNA Replication
- DNA replication is critical for duplicating the genome prior to mitosis.
- It ensures that both daughter cells receive identical copies of the genetic material.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on the phases of the cell cycle and their control points in this General Biology 1 quiz. Teams will collaborate to answer questions, ensuring a fun and competitive atmosphere. Score high to earn rewards in your next meeting!
