DNA
The Cell Cycle
Mitosis
Regulation
Chromosomes
100
Each of the two thick strands of a chromosome
What is a Chromatid?
100
Approximately 2 trillion cells per day
What is the number of cells that the human body produces per day?
100
The four stages of mitosis
What are prophase, metaphase, anaphase, telophase?
100
The signals at key checkpoints in the cell cycle that can delay or trigger the next phase of the cell cycle.
What are feedback signals
100
the substance of which eukaryotic chromosomes are composed.
What is chromatin
200
DNA is made up of these four nitrogenous bases.
What are adenine, guanine, cytosine, thymine
200
A repeating sequence of cellular growth and division made up of five phases.
What is the cell cycle?
200
The process in which the cytoplasm of the cell divides.
What is cytokinesis
200
These are the three key checkpoints.
What are the G1, G2 and Mitosis Checkpoints.
200
a eukaryotic structural unit of chromatin that consists of DNA wound around a core of histone proteins.
What is a nucleosome?
300
I always pair with Guanine.
What is cytosine?
300
The phase during interphase in which the DNA in each chromosome is replicated.
What is the S (Synthesis) phase
300
The phase where chromosomes line up along the equator and spindle fibers link the chromatids of each chromosome to opposite poles.
What is Metaphase?
300
Uncontrolled cell growth and division that can result in masses of cells that invade and destroy healthy tissues.
What is cancer?
300
A type of protein molecule found in chromosomes of eukaryotic cells but not prokaryotic cells.
What is a histone?
400
The region of the chromosome that holds the two sister chromatids together during mitosis
What is a centromere?
400
During this stage of the cell cyce, the chromosomes are packaged in their most highly condensed form.
What is mitosis?
400
During this phase of mitosis, a new nuclear envelope is formed at each pole and the spindle dissolves.
What is telophase?
400
A tumor that does not spread to other parts of the body
What is a benign tumor?
400
In this type of cell, the DNA is attached to the inner cell membrane in a circular loop molecule.
What is a prokaryote?
500
A unit of heredity that consists of a segment of nucleic acid that codes for a functional unit of RNA or protein.
What is a gene?
500
The cell division portion of the cell cycle is divided into these two phases.
What are mitosis and cytokinesis.
500
A network of microtubules that form during mitosis and moves chromatids to the poles.
What are spindle?
500
A growth that arises from normal tissue but that grows abnormally in rate and structure and lacks a function.
What is a tumor?
500
DNA is found here in the cell.
The nucleus
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