2.5++Cell+division

2 Cells - 2.1 Cell theory - 2.2 Prokaryotic cells - 2.3 Eukaryotic cells - 2.4 Membranes - 2.5 Cell division - Cell Labs

Question - how does this sub-topic relate to cell theory?
 * Starter**

Take a crash course on mitosis media type="custom" key="24123926"

//IMPORTANT NOTE: Textbooks vary in the use of the terms chromosome and chromatid. In this course, the two DNA molecules formed by DNA replication (during interphase) are considered to be sister chromatids until the splitting of the centromere at the start of anaphase; after this, they are individual chromosomes.//
 * Assessment statements ** (IBO notes added to some point to clearly indicate what needs to be understood and what does not)
 * 2.5.1 || Outline the stages in the cell cycle, including interphase (G 1, S, G 2 ), mitosis and cytokinesis. ||
 * 2.5.2 || State that tumours (cancers) are the result of uncontrolled cell division and that these can occur in any organ or tissue. ||
 * 2.5.3 || State that interphase is an active period in the life of a cell when many metabolic reactions occur, including protein synthesis, DNA replication and an increase in the number of mitochondria and/or chloroplasts. ||
 * 2.5.4 || Describe the events that occur in the four phases of mitosis (prophase, metaphase, anaphase and telophase). Include supercoiling of chromosomes, attachment of spindle microtubules to centromeres, splitting of centromeres, movement of sister chromosomes to opposite poles, and breakage and re-formation of nuclear membranes. ||
 * 2.5.5 || Explain how mitosis produces two genetically identical nuclei. ||
 * 2.5.6 || State that growth, embryonic development, tissue repair and asexual reproduction involve mitosis. ||

[|McGraw-Hill online learning] has a good introduction to cell division. Remember that although you will learn later about Meosis it's not necessary to learn the details just yet.
 * Presentations and tutorials**

[|Super Coiling] is key DNA replication and it is necessary step before chromosomes can be sorted for either mitosis or meosis. remember when super coiled chromosomes can’t be expressed or replicated. This [|Biostudio video] has more detail than is needed at IB, but shows supercoiling very clearly.

The khan academy has a video tutorial on the [|phases of mitosis] media type="custom" key="23681300"

The [|John Kyrk animation] visually explains mitosis in a simple way [|McGraw-Hill Biology] and [|Biostudio] both go a step further and has a good narrated animation of mitosis

Steven Taylor ([|i-Biology]) has a great presentation, view it and use it to help complete your notes media type="custom" key="23681324"

Jason De Nys also has a very good presentation to use for note development media type="custom" key="24508058"

Biocoach has a good tutorial on focusing [|mitosis], the central process driving cell divison, plus quizzes to test your learning

The [|biostuff tutorials] can be used later after note taking to check and reinforce knowledge as it directly reflecting the assessment statements

Use the teaching and visualization animation from St Olaf on mitosis

[|Click4Biology has a good summary] which you can either use to complete your notes or later for revision

__Time to get creative__. Turn your assessment statements into a short animated movie. For guidance and inspiration read through Mitosis Movies.
 * The approach**

__Notes__. Use the BioK notes as guidance to help you create effective notes. media type="custom" key="24124734"

North Harris College has lots of animations on [|mitosis and the cell cycle] (make sure you animations you view are useful and relevant to what you need to learn)
 * Useful Links**

Some short videos clips showing mitosis happening in real time

What makes a cancer a cancer? What are the characteristics of a cancer? This Scientific American article and video below on how cancers grow focuses on the known 'hallmarks' of cancers. This goes beyond the basic characteristics of uncontrolled cell division and apoptosis. What we know now is that it's more complicated than we first thought. media type="custom" key="24390526"