Cell Cycle
What are the three phases of interphase?
G1, S, G2
What is the correct order of mitosis phases?
Prophase, Metaphase, Anaphase, Telophase
Why can't cells grow too large?
Because the surface area to volume ratio becomes too small for efficient transport
What is cancer?
Uncontrolled cell growth
What happens during the S phase?
DNA is replicated.
During which phase do chromosomes line up in the center of the cell?
Metaphase
What increases faster: volume or surface area?
Volume
What is a tumor?
A mass of cancerous cells
Which pair includes a phase of the cell cycle and a cellular process that occurs during that phase?
G2 phase
What happens during anaphase?
Sister chromatids are pulled apart to opposite poles
Why do cells divide instead of continuing to grow?
To maintain efficient exchange of materials and DNA control
Name one cause of cancer at the cellular level.
Mutation in DNA / Failure of regulatory proteins
What is the purpose of mitosis?
To divide the nucleus and ensure each daughter cell has identical DNA
What structure helps pull chromosomes apart?
Spindle fibers
What problem does a large cell have with DNA?
DNA overload
What’s the difference between benign and malignant tumors?
Benign tumors do not spread; malignant tumors invade other tissues
What happens during the G2 phase?
The cell prepares for mitosis by producing organelles and molecules needed for division
What reforms around the chromosomes during telophase?
The nuclear envelope
Compare to small cells, large cells have more trouble
moving needed materials in and waste products out.
How do cancer cells look different from normal cells?
Cancer cells appear to have been destroyed.
Normal tissue arrangement is regular, while cancer cells are irregular.