Unit 4 biology genetics
Terms
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- Cancer
- Uncontrolled cellular division caused by faulty genes
- Cyclin
- a protein; its amount changes throughout the cell cycle
- Cyclin dependent kinase
- Allosterically activated, also needs to be phosphorylated with 2 phosphate groups.
- Amount of Cyclin protein kinase
- In cell cycle control, it remains at a constant level
- Allosteric
- produced by a compound not directly involved in that function (an allosteric effector) or to regulation of an enzyme involving cooperativity between multiple binding sites
- How does Cyclin dependent kinase stop working?
- At the end of its cycle, it creates an enzyme that destroys itself
- What does MPF stand for?
- Maturation/Mitosis Promoting Factor
- What does an MPF do?
- It disassembles nuclear lamina
- Cytokinesis
- Takes the cell with diploid nuclei and splits it into two cells.
- How long does the average human red blood cell live?
- 120 days
- How many mitotic cell divisions in a human?
- 2.5 million per second.
- Syngamy
- 2 membranes fusing, together with karyogamy makes fertilization
- Karyogamy
- 2 nuclei fusing, together with syngamy makes fertilization
- What is meiosis?
- Reduction division
- What happens in Checkpoint 1?
- The cell looks for favorable conditions outside the cell like food and room available, There are over 50 proteins to check for growth factors.
- What happens in the cell cycle stage of Synthesis?
- Copys the genome, takes 8 hours