Cell PARTS
Condensed genetic material
What is a chromosome?
A cell spends most of its lifecycle in this phase
What is Interphase?
This phase is a phase of temporary or permanent rest for the cell
What is G0?
Genetic material composed of stringy loose complex of DNA and proteins
What is Chromatin?
What is to produce two genetically identical daughter cells?
assist in cell division and formation of spindle fibers. 2 of these make a centrosome.
during this phase, centromeres line up along center of cell as spindle fibers connect the centromere of each chromosome to the centrosomes at the opposite pole of each cell
What is metaphase?
This period of interphase is a period of growth and final preparations for division
The total number of chromosomes a human usually has
What is 46?
Prokaryotic cells divide through a process called
What is Binary Fission
What are sister chromatids?
What is Prophase?
This phase of interphase is a period of cell growth and duplication of organelles
What is the G1 phase?
This checkpoint is considered the main checkpoint of the cell, the point at which it must choose whether or not to divide
What is the G1 checkpoint?
Interphase is made up of this many phases
What is 3?
The center of a chromosome where two sister chromatids are attached.
During this phase, chromosomes loosen and spread back out into chromatin and the nuclear membrane reforms around each set
What is Telophase?
This phase of interphase is a period of DNA replication
What is the S phase?
When a plant cell divides during cytokinesis what forms instead of the cell membrane pinching in?
The part of the cell cycle when chromosomes become visible when viewed under a microscope
What is mitosis ?
Microtubules that extend from the centrosome and help separated chromosomes during cell division. All chromosomes must be attached to these or cell division will not proceed.
What are spindle fibers?
During this phase, sister chromatids separate and move away from one another as spindle fibers pull them towards opposite ends of the cell
What is Anaphase?
If extensive or irreparable DNA damage is detected and cannot be repaired at G2, what is likely to happen?
What is the cell will undergo apoptosis?
At this checkpoint, the cell confirms that all sister chromatids must be attached to spindle fibers
What is the spindle / M checkpoint?
DNA replication completeness and DNA integrity are confirmed at this checkpoint
What is G2 checkpoint?