Study Guides (238,202)
Canada (115,009)
Chemistry (131)
CHM247H1 (16)

Cell Division and Mitosis Quiz Review.docx

6 Pages
Unlock Document

University of Toronto St. George
Michael Baker

LisaZhao Friday,November30,2007 Cell Division and MitosisQuiz Review I. Cell Division A.The Cell Cycle  CELL CYCLE:thesequence ofeventsfromone division toanother  CELL DIVISION: is a process by which a cell, called the PARENT cell divides itself into two identical cells, called theDAUGHTERcells smallsegmentofthelifeofthecell thelifeofthecellis knownastheCELL CYCLE the cell cycle represents all the events in the life of the cell (growing, accumulation nutrients, duplicating its DNA) tothecellfinallydividing 1. Stages  thecellcycle containstwomain stages(phases) a) Interphase: where the cellgrows andprepares itself for celldivision  First growth phase (G₁): cell takes in nutrients and produces proteins to give the cell energy, helpitgrow,andrepair damaged parts  Synthesisphase (S):duplicatesitsDNA(thechromosome)—going from23to46chromosomes LisaZhao Friday,November30,2007  Secondgrowth phase(G₂):cellis preparing itselffor celldivision b) Division Phase (Mitotic Phase): this is where the cell actually divides into two separate cells— this process involves MITOSISand CYTOKINESIS B. Mitosis and Cytokinesis 1. Mitosis: the process by which the nuclear material is divided. The duplicated chromosomes (copied during interphase) inthe nucleus are divided and moved to opposite endsof the cell 2. Cytokinesis: the process by which the cell separatesits cytoplasm and the organelles into equal parts  in animalcellsthecellmembrane pinchestogetherin themiddle tocreate tonew cells  in plantcellsanew cellwallisformedin themiddle (cellplate isformed) LisaZhao Friday,November30,2007 C. The Phases of Mitosis 1. Interphase: cellgrows and prepares itself for cell division 2. Prophase: two identical copies of each chromosome, nuclear membrane disappears, and spindle fibers form from the centrioles 3. Metaphase: chromosomes line upin the middle 4. Anaphase: each chromosome is pulled apartto theoppositepoleof the cellby the spindle fibers 5. Telophase: chromosomes are now at the opposite side of the cell, a nuclear membrane begins to form around each set ofchromosomes, cytokinesis begins, and two new daughter cells are formed 6. Interphase: the two daughter cells begin to grow (make additional cytoplasm and organelles) and duplicatesitsgenetic material (23 to46chromosomes) LisaZhao Friday,November30,2007 II.Reproduction and Cell Division There are twomain typesofreproduction:sexualandasexual reproduction asexual sexual binary fission hermaphroditic budding conjugation fragmentation separate sexes spore formation vegetative reproduction A. Asexual Reproduction Severalformsofreproduction that producesoffspringthat isidenticaltotheparent There are five main typesofasex
More Less

Related notes for CHM247H1

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.