Vocabulary
What is DNA overload?
if a cell size increases too much, the DNA cannot control all cell functioning
What is the correct order of the parts of interphase?
Gap 1, Synthesis, Gap 2
What are the correct phases of Mitosis?
Prophase, Metaphase, Anaphase, Telophase
Cancer cells form masses called what?
Tumors
What is one advantage of sexual reproduction?
the offspring inherit a wider variety of genetic information
What is apoptosis?
a process of programmed cell death
Which part of Interphase does DNA replicate?
Synthesis
During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?
Metaphase
How do internal regulators affect a cell?
They inform the cell when to enter mitosis.
A type of bacteria reproduces asexually and forms genetically identical spores. What process would this single-celled bacterium use to divide?
Mitosis
What is the name for the process in which the cytoplasm and organelles of a cell divides and produces two new cells?
cytokinesis
Which part of the cell cycle is the longest?
Interphase
What is the role do the spindle fibers during mitosis?
They help separate the chromosomes
What are four things that could cause a cell to lose control of its cell growth?
Smoking tobacco, radiation exposure, gene defects, viral infections
A coyote has 78 chromosomes in its brain cells. How many chromosomes would it have in its ear cells?
78 chromosomes
They stimulate growth and division, embryonic development, and wound healing
Why do cells divide?
to ensure that a cell does not become too large; to produce new cells during an organism's growth; to replace damaged cells and tissues
What are the two main stages of cell division?
Mitosis and Cytokinesis
What happens when cancer occurs?
the control of the cell cycle is impaired; tumors can form
Sea stars are genetically different from each other and from their parents. These genetic differences are the result of what type of reproduction?
sexual
centrioles
What is the cell cycle?
a series of events that cells go through as they grown and divide
During what phase do the cells undergo normal activity and grow larger?
Interphase
True or false: Most cells stop growing when they come into contact with other cells? Why or why not?
True; cells have regulators that tell them when to and when not to divide
How does exchanging materials cross the cell surface limit cell growth?
As cells increase in size, volume increase more rapidly than surface area