Cell Cycle
What are the phases of interphase?
G1, S, G2
What are the steps of Mitosis?
The steps are: Prophase, Metaphase, anaphase, and telophase.
Cytokinesis is the division of the...
Cytoplasm
All cells are formed from______
pre-existing cells
Cancer is
unregulated cell growth. cells growing and growing that do not stop and form a tumor
What happens during the S phase?
DNA is replicated
What happens during prophase?
Chromosomes condense and spindle fibers begin to form
What is the difference between a chromatid and chromosome?
A chromatid is a single structure. A chromosome is 2 sister chromatids connected by a centromere
Why does a group of cells function better than one big cell?
Cells get larger, the volume and surface area gets larger and less efficient.
What is a eukaryote cell?
A cell that ahs a nucleus
What is the importance of G1?
To allow the cell to grow to the best of their ability
What is the difference between daughter cells and parent cells?
Parent cells are divided into daughter cells
Why do chromosomes in the cell have two chromatids?
It allows the cell to divide into genetically identical daughter cells.
What is a specialized cell?
these are the types of cells that perform specialized functions within the organism.
What is a cyclin?
A hormone that regulates the cell cycle
Which cells have a higher rate of mitosis: a nerve cell in the brain or a cell lining of the intestine?
A cell in the lining of the intestine
What happens in metaphase?
Chromosomes line up in the middle of the cell
During differentiation, what type of cell is divided into specialized cells?
What are stem cells?
How did the invention of the light microscope lead to the development of refinement of the cell theory?
A more powerful microscope would allow for scientists to see more structures in the cell.
What is gene expression?
This is the expression of different genes at different times.
As a cell gets bigger, does the surface area or volume get bigger first? What will happen to the function of the cell?
Cell volume increases faster than surface area and will cause a decrease in function
What is the difference between telophase and cytokinesis
How does the process of mitosis help to repair a wound?
Mitosis forms new cells in the area where the old ones were damaged.
True or false: All cells are capable of reproducing? All cells contain genetic material?
False: Nerve cells can not reproduce and all cells do not contain genetic material. Blood cells do not
What is a centromere?
A section in the middle of the chromosomes that spindle fibers attach to to pull apart chromosomes