Cancer Cells
How many times can cancer cells divide?
Infinitely
When the division of the cytoplasm occurs, which phase of mitosis is the cell in?
Cytokinesis
What is the region on each sister chromatid where they are most closely attached?
Centromere
What kind of signals do cells receive in the cell cycle?
Stop/go signals
How many chromosomes does a human have?
46
Cancer cells can evade _____ and can divide with errors.
Apoptosis
When chromatin in the nucleus of the cell gets smaller and becomes visible, the cell is in which phase of mitosis?
Prophase
DNA wraps around proteins known as ____ to form nucleosomes.
Histones
Regulation of the cell cycle involves an internal control system that consists of proteins know as _______
Cyclins
What type of cells are somatic cells? What type of cells are gametes?
Somatic: Body cells
Gametes: Reproductive cells
How do normal cells become cancerous?
DNA mutation
What are the 5 main phases of Mitosis.
Prophase, Interphase, Metaphase, Anaphase, Telaphase
After DNA replication, chromatincondenses to form a ____?
Chromosome
What are the hormones released by cells that stimulate cell growth?
Growth Factors
2n=?
n=?
46
23
What does the uncontrollable growth of cancers cells lead to?
A tumor
Which cell organelle aids in the cell division of animal cells?
Centriole
A ____ contains all of a cells genetic information.
Genome
What initiates signal transduction pathways that stop the cell cycle in G1 phase?
Contact inhibition
Somatic cells divide by
Gametes divide by
Mitosis
Meiosis
What is it when cells separate from a tumor and move to another place in the body?
Metastasis
What is the area of the cell membrane that pinches in and eventually separates the dividing cell?
Cleavage Furrow
The strings of nucleosomes form ___ .
Chromatin
What is it when cells rely on attachment to other cells or the extracellular matrix to divide?
Anchorage dependence
If an organism has 52 chromosomes, how many chromosomes will that organisms gametes have?
26