Posts Tagged ‘respiration’

Gas exchange

Monday, September 12th, 2011

Do you know the difference between respirationbreathing and gas exchange?

You will, hopefully, by the end of the next topic.  Here are some resources to help you.  This one gives basic factual information.  This one is interactive.  And this one from Get Body Smart is also good.

Watch this excellent video from TEDMED where Dr Keshavjee brings a breathing lung on stage!

YouTube Preview Image

This one, about a smoking 2 year old, is much more disturbing to watch!  Again, thanks to Mr Taylor over at iBiology for finding the resource.

 

Cellular respiration

Monday, February 7th, 2011

Respiration is NOT breathing!  Ok, now I’ve got that off my chest, let’s continue 🙂

This is going to be some of the more challenging work we cover, but it is good stuff!  Start with this presentation.  Once you feel you have a handle on that, then move on to this one.  Once again, huge gratitude to Mr Taylor in Bandung for his work. Finally, here are the basics, summarized: Cell Respiration

A few good online resources to help you through this topic:    Cellular respiration songYouTube Preview Image

We’ll do a lab where we burn peanuts to simulate cell respiration (you said no-one had allergies, right?). Burning peanuts to simulate cellular respiration

Creativity with carbon

Tuesday, November 16th, 2010

Imagine you are a carbon atom in a molecule of carbon dioxide in the air.  Close your eyes.  Really imagine yourself as that carbon atom.  Your task is to describe the journey you take from being part of carbon dioxide in the air, through the carbon cycle, until you return to the air again.  Here is my attempt at the beginnings of such a story to give you the idea.  You do not need to start in this way.  You decide.  Get creative!  Let your imagination work!

There I was, happily floating around in my usual gaseous form along with several of my brothers and sisters  (other carbon dioxide molecules), and my good friends nitrogen and oxygen.  We were having a great time bumping into one another, when I got dangerously close to a leaf.  Everyone had always told me to stay away from green plants, that I could get sucked into a stoma and never be seen again.  Before I realized what was happening, I was inside a chloroplast and going through a very fast reaction where I had to let go of my two oxygen atoms, and for a moment be entirely alone.  Before long, I found some other carbons and we joined together, 6 of us, 12 hydrogen friends and 6 oxygen buddies to form a glucose molecule….

Life processes

Wednesday, October 20th, 2010

Photosynthesis by One-Speed Photography on flickr

The two most important processes for living organisms are RESPIRATION and PHOTOSYNTHESIS.  As we learn about these, you must keep in mind what each has to do with ENERGY

Look at this document.  It is a webquest that will guide you through the main points to remember about respiration and photosynthesis.  Thanks to Mr Goodman for putting it together for us 🙂

Respiration and Photosynthesis Web quest

Creativity with Carbon

Friday, February 19th, 2010

Imagine you are a carbon atom in a molecule of carbon dioxide in the air.  Close your eyes.  Really imagine yourself as that carbon atom.  Your task is to describe the journey you take from being part of carbon dioxide in the air, through the carbon cycle, until you return to the air again.  Here is my attempt at the beginnings of such a story to give you the idea.  You do not need to start in this way.  You decide.  Get creative!  Let your imagination work!

There I was, happily floating around in my usual gaseous form along with several of my brothers and sisters  (other carbon dioxide molecules), and my good friends nitrogen and oxygen.  We were having a great time bumping into one another, when I got dangerously close to a leaf.  Everyone had always told me to stay away from green plants, that I could get sucked into a stoma and never be seen again.  Before I realized what was happening, I was inside a chloroplast and going through a very fast reaction where I had to let go of my two oxygen atoms, and for a moment be entirely alone.  Before long, I found some other carbons and we joined together, 6 of us, 12 hydrogen friends and 6 oxygen buddies to form a glucose molecule….

Carbon cycle

Thursday, February 11th, 2010
Nature by jaxxon on flickr

Nature by jaxxon on flickr

We’re going to try and connect all that we have been learning – respiration, combustion, photosynthesis, food chains – into one big carbon cycle. This brainpop video will help get you started.  

This one on fossil fuels explains where oil, coal and gas come from, and leads into our next section on the importance of oil and how to separate it out by distillation.  This video explains how this works in an oil refinery. We’ll do a world energy audit and look at where the natural resources are and what the alternative energy sources might be.

Greenhouses and photosynthesis

Thursday, January 28th, 2010

Take a look at this sheet (thanks Mr Boulton).  Greenhouse Assessment Task

It gives some background info on how greenhouses work, and finishes with some questions about the links with photosynthesis and respiration.

Do you know the difference?

Thursday, September 10th, 2009
alveoli in the lungs from wellcome images

alveoli in the lungs from wellcome images

Do you know the difference between respiration, breathing and gas exchange?

You will, hopefully, by the end of the next topic.  Here are some resources to help you.  This one gives basic factual information.  This one is interactive.  Enjoy!