- Essays Database Online
- Argumentative Essay
- Comparative Essay
- 1200 Word Essay
- IB Extended Essay
- Scholarship Essay
- Discursive Essay
- Research Proposal
- Reaction Paper Writers
- Coursework Writing
- Book Report Writing
- Book Review Writing
- Term Paper Writing
- Write a Case Study
- Case Brief Writing
- Discussion Board Post
- Blog Article Writing
- Article Writing
- Article Review
- Literature Review
- Annotated Bibliography
- Article Critique
- Movie Critique
- Cover Letter Writing
- Motivation Letter Service
- Winning Synopsis
- Marketing Plan
- Business Plan Writing
- Winning White Paper
- Grant Proposal Writing
- Memo Essay Help
- Questions-Answers
- Professional Online Test
- Order Cool Posters Here
- PowerPoint Presentation
- Capstone Project Writing
- Dissertation Writing
- Dissertation Abstract
- Dissertation Literature
- Dissertation Conclusion
- Hypothesis
- Rewriting Services
- Editing Service
- Proofreading Service
- Revise a Paper
- Abstract Help
Genetics
Essay specific features
Written by:
Mattie M
Date added:
July 22, 2015
Level:
University
Grade:
A
No of pages / words:
3 / 821
Was viewed:
3437 times
Rating of current essay:
Essay content:
chromatin condenses, visible as chromosome, becomes chromatid, fiber extend from the centromere
2. centrioles move to opposite poles of cell
3. Nucleolus disappear
4. Nuclear membrane breakdown
aster is the beginning of the spindle
Metaphase
? spindle fiber align chromosomes along the middle of cell
? helps to ensure chromosomes separate properly
? receive only 1 copy of each chromosome
? the chromosomes line up in the middle
Kinetochore – the protein that connects the chromosomes to the spindle fiber track
? moves the chromosomes
Anaphase – sister chromatids separate at kinectochores
? move to opposite poles
? pulled at centromeres
? pole move farther apart
? need ATP
? In anaphase protein holding together sister chromatids are inactived
Telophase
? chromosomes arrive at opposite poles
? daughter nuclei form
? nucleoli form
? chromosomes disperse
? - no longer visible under microscope
? spindle fiber disperse
? cytokinesis begins, cell division
Cytokinesis – physical separation of the cells into two daughter cells at the cleavage furrow
In plant cells, they do not have a cleavage furrow, it forms a cell plate
CELL DIVISION
coordination of cell division
? timing of cell division
? rate of cell division are crucial for normal growth, development and maintenance
frequency
? depend on cell type
? skin cells divide frequently throughout life
? liver cells retain ability to divide, bu keep it in reserve
? mature nerve cells and muscle cells do not divide at all after maturity
cell cycle control
-2 irreversible points in cell cycle
? - replication of genetic material
? - separation of sister chromatids
? cells can be put on hold at specific checkpoints
checkpoint control system
3 major checkpoints-
? G1, most crucial, can DNA synthesis begin?
? G2 – has DNA synthesis been completed correctly?
? Anaphase – spindle checkpoint, can sister chromatids separate correctly?
Activation of cell division
? cell communications – signals protein
? - activators
? -inhibitors
internal signal
promoting factor:
? cyclin
? - regulatory proteins
? - levels cycle in the cell
? CDKS
? - cycle dependent kinesis
? - enzyme activates cellular proteins
? Mpg – maturation (mitosis) promoting factor
? APC – anaphase promoting complex
External signals
Growth factor
? protein signals released by body cells that stimulate other cells to divide
? - density dependent inhibition
? -- crowded cells stop dividing
? -- mass of cells use up growth factor
? anchorage dependent
? - to divide cells must to be attached to a substitute
Cancer
what causes them:
? uv radiation
? chemical exposure
? radiation exposure
? heat
? smoking
? pollution
? age
? genetics
Tumors
? Benign tumor, no threat
? Malignant tumors
? - cell leaves original site
? - lose attachment to near by cells
? - carried by blood and lymph system to other tissues
? - start more tumors – metastasis
? impair functions of organs throughout body
chemotherapy kills rapidly dividing cells
gleevec – targets enzyme proteins found only in tumor fells
? treatment for adult leukemia and stomach cancer
? first successful targeted drug
displayed 300 characters
Custom written essay
All essays are written from scratch by professional writers according to your instructions and delivered to your email on time. Prices start from $10.99/page
Order custom paperFull essays database
You get access to all the essays and can view as many of them as you like for as little as $28.95/month
Buy database accessOrder custom writing paper now!
- Your research paper is written
by certified writers - Your requirements and targets are
always met - You are able to control the progress
of your writing assignment - You get a chance to become an
excellent student!
Get a price guote
chromatin condenses, visible as chromosome, becomes chromatid, fiber extend from the centromere
2. centrioles move to opposite poles of cell
3. Nucleolus disappear
4. Nuclear membrane breakdown
aster is the beginning of the spindle
Metaphase
? spindle fiber align chromosomes along the middle of cell
? helps to ensure chromosomes separate properly
? receive only 1 copy of each chromosome
? the chromosomes line up in the middle
Kinetochore – the protein that connects the chromosomes to the spindle fiber track
? moves the chromosomes
Anaphase – sister chromatids separate at kinectochores
? move to opposite poles
? pulled at centromeres
? pole move farther apart
? need ATP
? In anaphase protein holding together sister chromatids are inactived
Telophase
? chromosomes arrive at opposite poles
? daughter nuclei form
? nucleoli form
? chromosomes disperse
? - no longer visible under microscope
? spindle fiber disperse
? cytokinesis begins, cell division
Cytokinesis – physical separation of the cells into two daughter cells at the cleavage furrow
In plant cells, they do not have a cleavage furrow, it forms a cell plate
CELL DIVISION
coordination of cell division
? timing of cell division
? rate of cell division are crucial for normal growth, development and maintenance
frequency
? depend on cell type
? skin cells divide frequently throughout life
? liver cells retain ability to divide, bu keep it in reserve
? mature nerve cells and muscle cells do not divide at all after maturity
cell cycle control
-2 irreversible points in cell cycle
? - replication of genetic material
? - separation of sister chromatids
? cells can be put on hold at specific checkpoints
checkpoint control system
3 major checkpoints-
? G1, most crucial, can DNA synthesis begin?
? G2 – has DNA synthesis been completed correctly?
? Anaphase – spindle checkpoint, can sister chromatids separate correctly?
Activation of cell division
? cell communications – signals protein
? - activators
? -inhibitors
internal signal
promoting factor:
? cyclin
? - regulatory proteins
? - levels cycle in the cell
? CDKS
? - cycle dependent kinesis
? - enzyme activates cellular proteins
? Mpg – maturation (mitosis) promoting factor
? APC – anaphase promoting complex
External signals
Growth factor
? protein signals released by body cells that stimulate other cells to divide
? - density dependent inhibition
? -- crowded cells stop dividing
? -- mass of cells use up growth factor
? anchorage dependent
? - to divide cells must to be attached to a substitute
Cancer
what causes them:
? uv radiation
? chemical exposure
? radiation exposure
? heat
? smoking
? pollution
? age
? genetics
Tumors
? Benign tumor, no threat
? Malignant tumors
? - cell leaves original site
? - lose attachment to near by cells
? - carried by blood and lymph system to other tissues
? - start more tumors – metastasis
? impair functions of organs throughout body
chemotherapy kills rapidly dividing cells
gleevec – targets enzyme proteins found only in tumor fells
? treatment for adult leukemia and stomach cancer
? first successful targeted drug
displayed 300 characters
General issues of this essay:
Related essays:
-
3 pages, 598 words
-
2 pages, 507 words
-
3 pages, 821 words
-
2 pages, 431 words
-
4 pages, 842 words
-
2 pages, 517 words
-
0 pages, 0 words