Posts Tagged ‘cells’

Historical biology or biological history?

Friday, March 11th, 2011

microscope by staceyjoy on flickr

This week we’ll be looking at the development of the cell theory.  You will need to research the contribution made by each of the following scientists, find a picture of the person or what they made or saw, then use the information to construct a timeline.  Put all that into a presentation of some kind  [prezi / dipity /anything else appropriate].  Your presentation should also include the main points of the cell theory.  Enter the url of your work as a link in a comment on this post.

1.      Hans and Zacharias Janssen

2.      Robert Hooke

3.      Anton Leeuwenhoek

4.      Matthias Schleiden

5.      Theodor Schwann

6.      Rudolf Virchow

7.      August Weismann

Can you label the parts of the microscope on this drawing? Parts-of-a-microscope

Cell structure

Thursday, August 26th, 2010

E Coli by hukuzatuna on flickr

The syllabus guide for Topic 2 is here: Topic 2 – syllabus outline

You need to be able to draw, label and annotate a diagram of E.Coli (a prokaryote) and a liver cell (a eukaryote).  In addition you should be able to recognize these structures on an electron micrograph like the one pictured. 

You will also have to compare prokarotes and eukaryotes, and compare plant and animal cells.

Here are a couple of great presentations to help you achieve these tasks, and I’ll be giving you several handouts to practice with.  We’ll be getting the light microscopes out for a play too, as well as making our own slides to view.  Presentation on prokaryotesPresentation on eukaryotes.

Cell theory

Monday, August 16th, 2010

These are the syllabus statements for this section of the syllabus.  Use this presentation, your textbooks, or any other resources you find helpful to tackle these problems.  We will divide and conquer – a bit like cells specializing in one particular function, each of you will be responsible for one section, and then share your expertise.  This can be notes that you leave as a comment to this post, or a handout for your classmates, or both.

  • Outline the cell theory. 
  • Discuss the evidence for the cell theory.
  • State that unicellular organisms carry out all the functions of life.
  • State that multicellular organisms show emergent properties.
  • Explain that cells in multicellular organisms differentiate to carry out specialized functions by expressing some of their genes but not others.
  • State that stem cells retain the capacity to divide and have the ability to differentiate along different pathways.
  • Outline one therapeutic use of stem cells.

Unicellular & Multicellular Organisms     Cell Theory    SPECIALIZATION final

STEM CELLS – Laura Lehmann & Shloka Sharan

Check your knowledge of cells

Friday, November 6th, 2009

Here is a link to a quiz that you can use to check your understanding of cells.  It is brief – my advice is that you study the structure of prokaryotic and eukaryotic cells, and their functions, and their differences, then see how you go on the quiz.  The answers are on there too, so you can self-assess.

Quiz – cell parts and their functions

People missing next Tues for the Geo field trip – this is important for you folks to try at home.

Exploring cell diversity

Thursday, November 5th, 2009

Here are a couple of questions we will try to answer this week:

What do all cells have in common?

Why do cells differentiate?  Within the same organism, there are differences between cells – why is this?

Here’s what you need to do:-

  1. In your groups, make a list of all the different types of cells you can think of (eg, red blood cell, leaf cell)
  2. Each student chooses ONE cell type to research.  Draw the basic structure, state its function, describe why it is unique, and where it is found.
  3. Share your findings with your group.
  4. Discuss the similarities and differences between the cells you described.  Are cells more alike or more different from one another?  Are some cells more complex than others?  Which ones? 
  5. Try to explain why cells have these similarities and differences.

Cell structure

Thursday, October 22nd, 2009
question mark by Leo Reynolds on flickr

question mark by Leo Reynolds on flickr

Take some time to click through this site to learn more about cells and their structures. 

Here is another good place to learn about cells. 

Look through each site and then leave me a comment as to which of them you preferred and WHY

If you find any other sites on this topic that you think would help your classmates learn, please include them in the comments too.

Looking at cells

Monday, October 19th, 2009
cheek cells by Ah Pao on flickr

cheek cells by Ah Pao on flickr

This week we’ll be getting the microscopes out and you will be making your own slides of different cells.  On the link below you will find the instructions for how to do this.  I suggest you read them before class.  This will save you time in the lesson, and you will be able to make more slides 🙂

Observing cells with light microscopes

 

 

 

plant cells leaf by Ah Pao on flickr

plant cells leaf by Ah Pao on flickr

Once you have made your slides, you will be expected to draw biological diagrams of what you observe.  The rubric that will be used to assess these drawings is here:

Grade 9 Rubric for the marking of scientific drawings 

History meets Biology = Biostory?

Monday, October 12th, 2009
microscope by biology big brother on flickr

microscope by biology big brother on flickr

This week we’ll be looking at the development of the cell theory.  You will need to research the contribution made by each of the following scientists, find a picture of the person or what they made or saw, then use the information to construct a timeline.  Put all that into a powerpoint or prezi presentation.  Done! 

1.      Hans and Zacharias Janssen

2.      Robert Hooke

3.      Anton Leeuwenhoek

4.      Matthias Schleiden

5.      Theodor Schwann

6.      Rudolf Virchow

7.      August Weismann

Here is some more info and the rubric that will be used to assess this activity.  Integrated Science 1 cell theory activity

Structures of Life

Monday, October 12th, 2009
macro water drop by Hypergurl on flickr

macro water drop by Hypergurl on flickr

Here are the notes for the next section of the course.  Download and print if you like.  Make sure you thank Mr. Boulton for making them 🙂

Structures of Life notes