Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
38 Cards in this Set
- Front
- Back
- 3rd side (hint)
Cell Cycle |
The steps that allow a cell to split into two cells. |
Allows growth Allows cells to repair damaged tissue |
|
Mitosis |
The division of the nucleus |
Chromosomes separate into two identical sets One of the most important and main process of the cell cycle |
|
Interphase |
Period of growth and DNA replication between divisions |
Separated into three phases A cell spends most of its life in this process |
|
G1/G0 |
Stage where growth occurs and macromolecules are made |
Stage of normal cell processes Same as G2 |
|
S |
Stage where DNA replication occurs |
Synthesis Stage between G1 and G2 |
|
G2 |
Second stage of growth and marcomolecule making |
Same as G1/G0 Stage after S |
|
M |
Stage where mitosis and cytokinesis occur |
Final stage of the cell cycle The cell would not separate with this stage |
|
Restriction Point |
Where growth signals tell the cell to finish the entire cycle |
One thing that may occur during G1 There is no longer a requirement for growth to finish the cycle |
|
Cytokinesis |
When the cytoplasm splits into two separate cells |
Occurs during stage M The very last process that occurs in the cell cycle |
|
Daughter Cell |
A cell that is created after the cell cycle is complete |
Result of the cell cycle is two ______ Each ______ has one strand of DNA from the parent cell |
|
Nucleotide Base Pairing |
Each nitrogen base has a specific pair that it must be to function properly
|
A-T, C-G The cells know these very well and must keep them the same |
|
Hydrogen Bond |
A bond formed between two hydrogen atoms |
A and T have a double _____ |
|
Antiparallel |
When two things are parallel, but run in opposite directions |
DNA strands are ________ |
|
DNA Polymerase |
Helps to build a new, matching strand for each of the original strands of DNA |
Works with RNA primer Added to the DNA synthesis process by RNA polymerase |
|
Semiconservative Replication |
Each daughter molecule has one original strand of the DNA |
Means that half the strand of DNA is original
|
|
Histone |
A type of protein that DNA wraps around |
Forms a nucleosome |
|
Chromosome |
Made up of protein and DNA, containing genetic information |
Found inside the nucleus
|
|
Chromatin |
The complex of proteins and DNA that forms chromosomes |
Makes up chromosomes
|
|
Mutation |
A change in the sequence of a cell's DNA |
There are three types of _____ The X-Men are humans with _____ |
|
Mutagen |
A cause of a mutation
|
Chemicals, Radiation, Viruses
______ are very often carcinogens |
|
Excision Repair |
When an incorrect base pair is attached to DNA it is removed
|
A base pair is cut out of the DNA and replaced |
|
Leading/Lagging Strand |
The names for the strands that nucleotides are added onto |
One gets nucleotides continuously One gets nucleotides in segments |
|
Sister Chromatids |
Either of the two copies of a chromosome |
Not brothers, but _____ |
|
Centromere |
The piece that attaches the sister chromatids
|
Holds the chromosome together |
|
Aneuploid |
Cells that form when mutations occur as chromosomes are being separated |
Extra or missing chromosomes |
|
Prophase |
When chromosomes become visible as pairs of chromatids |
The first phase of mitosis Nuclear envelope disappears |
|
Metaphase |
Chromosomes align themselves in the middle of the cell |
Third phase of mitosis Like a type of "tug of war" with the chromatids |
|
Anaphase |
Phase where the genetic information of the parent cell is put into the two daughter cells |
Fourth phase of mitosis
Phase with the most to do with the nucleus |
|
Telophase |
When the chromatids/chromosomes move to opposite ends of the cell
|
Final phase of mitosis
Two nuclei are formed |
|
Centrioles |
Organelle in animal cells that develops spindle fibers |
Found in most eukaryotic cells |
|
(Mitotic) Spindle (Fibers) |
Form a protein structure that divides genetic information
|
Connect things |
|
Spindle Poles |
Opposite ends of the cell |
Similar idea to the North and South Poles
Equal to centrosome in function |
|
Kinetochore |
Proteins on chromatids that spindle fibers attach to during cell division
|
Help to separate sister chromatids
|
|
Cyclins |
Proteins that regulate the progression of the cell cycle
|
Bind to and activate kinases
|
|
Kinases |
Enzymes that transfer a phosphate group from ATP to other cell cycle enzymes to activate them |
From the family of phosphotransferases |
|
Cell-Cycle Arrest |
When proteins stop the cell cycle until mistakes are fixed
|
The entire team has to stop if someone in an earlier stage makes a mistake
All processes stop |
|
Cancer |
Uncontrolled cell growth due to mutations in checkpoint proteins
|
A vey sad disease |
|
Checkpoints |
Proteins monitor the condition of the DNA, chromosomes, and mitotic spindle to prevent producing mutated cells |
Areas where proteins check in on the cell cycle |