The importance of cell division
1 / 25

The Importance of Cell Division - PowerPoint PPT Presentation

  • Uploaded on

The Importance of Cell Division. Why would a cell want to divide?. Purpose of Cell Division. Three purposes of cell division: Reproduction Repair Growth. Cell Division For Reproduction. All cells use cell division to reproduce Each division results in two new cells.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
Download Presentation

PowerPoint Slideshow about ' The Importance of Cell Division' - ataret

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Purpose of cell division
Purpose of Cell Division

Three purposes of cell division:

  • Reproduction

  • Repair

  • Growth

Cell division for reproduction
Cell Division For Reproduction

  • All cells use cell division to reproduce

  • Each division results in two new cells

Types of cell division
Types of Cell Division

  • Asexual Reproduction

    • Involves one parent cell

    • Produces two identical daughter cells each with a complete set of identical genetic information

Types of cell division1
Types of Cell Division

  • Sexual Reproduction

    • Involves two parent cells

    • Each parent provides half the DNA found in the daughter cells.

    • Produces offspring with characteristics from both parents.

Cell division for repair
Cell Division for Repair

  • Replacement of damaged cells – cuts, broken bones.

  • Production of new red blood cells.

Cell division for repair1
Cell Division for Repair

  • Millions of skin cells are shed

    and replaced daily.

Cell division for growth
Cell Division for Growth

  • Growth is a matter of increasing the number of cells that are present

  • Cells getting bigger doesn’t work

Cell division for growth1
Cell Division for Growth

  • Cells all need energy, nutrients, water and gases to grow.

  • Chemicals need to be in solution to be used.

    • Cells need water to use chemicals and get rid of waste.

Cell division for growth3
Cell Division for Growth

  • Chemicals enter a cell across the cell membrane, and travel through the cell to where it is used.

  • Movement of chemicals is called


Cell division for growth4
Cell Division for Growth

  • Water enters a cell across the cell membrane in a process called


Osmosis diffusion

  • …why do chemical particles move?

  • Chemicals move from an area of high concentration to low concentration.

  • Water moves to where the solution is more concentrated.

Osmosis diffusion1

Particles will diffuse through the first cell and into the next cell.

Osmosis diffusion2


is the amount of a substance present in a given volume of water.

Vocabulary you need to become familiar with
Vocabulary you need to become familiar with!

Asexual Reproduction

Sexual Reproduction





Page 37 Questions #1 - 6


  • Let’s read the rules!

  • Identify parts and functions

    • Use Pg 605

Drawing biological diagrams
Drawing Biological Diagrams

  • Draw a Biological diagram for the following image

  • Total Mag = Ocular Mag x Objective Mag x 100%

Did he she
Did he/she?

  • Name (first and last), date and teacher's name in top right hand corner

  • Title is appropriate

  • Title is underlined and centred in middle of page

  • Pencil is used for diagram and labels

  • Clean, thick, sharp lines; stippling is used for dark areas

  • Diagram takes up at least ½ of the page

  • Accurate drawing (draws what is seen)

  • Records total magnification; is correctly calculated

  • Total magnification is recorded under drawing

  • Labels are printed to the right of the diagram

  • Labels are aligned under each other

  • Label lines are drawn with a ruler and do not cross each other

  • All structures are labeled correctly