Archive for the ‘Cytology’ category

Up-celling yourself

April 6, 2012

We have nearly finished our studies into the structure of cells, including both animal and plant cells. We also have learned how to use a microscope, looking at onion skin cells (Here are some pictures if you are missing them: Unstained 100x, Unstained 400x, Stained 100x, Stained 400x.

We’ve also looked at the parts of the cell, including the simplified internal parts – such as the organelles like the mitochondria, nucleus, chloroplasts, vacuoles, endoplasmic reticulum (E.R) and ribosomes, and cell structures like the membrane, cytoplasm and cell wall. You have also worked on learning what these parts look like, and what they do (their functions). You (should!) have submitted a 3-D model and cell analogy, demonstrating both that you know what the parts look like and what they do – it is important that you know these concepts and terms, and that they appear in your glossary, because there will be a test coming up soon…

I’ve attached something to help you understand and remember the parts of the cell below the fold; you may be familiar with it…

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To unlock cells – you need a key (updated!)

April 4, 2012

So, we are getting towards the end of our first unit of study – Genetics & Natural Selection. We’ve looked at the relationship between evolution & natural selection. To finish this unit of study, we need to understand how cells propagate – how one cell becomes more.

This process is called cell division, and there are two main types: Mitosis and Meiosis. But before we get too far into this topic, you may want to revise the important concepts of Genetics. Here is a post that covers the genetics topics – I strongly suggest you go back and read it (and watch the videos!) – not doing this will do bad things to your results…

So, back to the cell division topic – what do you have to know? The problem is is you look this topic up on the internet, you will find far more information than you need at year 10 – information about what the different phases are, what happens during each phase, a lot of details. You should try and learn this information if you plan on studying biology during VCE, but otherwise you only need to know the basics.

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