Wednesday, April 28, 2010

The Water Wizard

After watching this video I started thinking about the importance of water. One of the most shocking thing i ve learned is the average person uses 4.5 million litres of water each year.

“Its melting away its wasting away I need it there’s no doubt about” In my opinion is completely true. Our excessive use of fossil fuels is warming the planet and speeding the melting of the Earths poles and glaciers and after thinking about all the things that we use water for there can be no doubt in my mind that we need fresh water

Its not like water is used up but it will just become unavailable to us “Its all we’ve got, its all that’s it” shows there is a limit and with a growing population of people in the world who all need water its important to educate them in conserving water.

“Every drop counts” a drop is not much but if every one in the world say has one less shower or bath a week that’s 200 litres X 6 billion people what is a lot of fresh water.

Monday, April 26, 2010

alternative energy

I already knew about getting energy from the ocean but I never knew how it would be done. I now know that the water flows through turbines to create power. Also I’d never thought that the currents in the ocean would help ships use less fuel to move around if they fallow these currents.

Monday, April 19, 2010

Ocean Currents of the world

Ocean currents are the movement of water in any direction. It’s kind of like the highways for water and pollutants that effect weather. These currents are found all over the world.

Surface currents are the ones found in the upper 400 metres of ocean (10% of ocean water) most of this kind of current are caused by wind moving across the water creating friction. The friction cause the water to form gyres (a spiral pattern of water. Gravity also has an important role it takes mounts of water near the shore and pulls the water down slopes and that make a current.

Deep water currents are found bellow 400 metres they are called thermohaline circulations these currents are cause also by gravity and density differences in the water.

Thursday, March 25, 2010

Antibodies against pathogens:

Antibodies are like keys and will only be
Able to destroy pathogens with the matching
Antigens.

Blood stream:
When a pathogen enters the blood stream the
Immune system sends B cells. There antibodies
Connect to the pathogens antigens. The B cell then
Divides.

Zoomed in blood stream:

After B cells divide they make plasma cells
Which only make antibodies straight into the
blood stream.

http://www.youtube.com/watch?v=Ys_V6FcYD5I&feature=player_embedded

Thursday, February 25, 2010

Cells and microscopes.

Before Anton van leeuwenkoek people thought what diseases for caused by curses.

Robert hook at around that same time as Anton studied cells with a compound light microscope.

If I'm to forget all about cells i at least need to remember the cell theory


1) All organisms are made up of cells

2) The cell is the basic unit of organisms

3) All cells come form preexisting cells


The electron microscope is only about 61 years old its hard to believe it has been around that long.

the two kinds of electron microscopes SEM and TEM.

I want to know more about how hey react to each other ?

Tuesday, February 23, 2010

Why are the mitochondrion and Chloroplast designed the way they are.








these pictures are from

http://www.scq.ubc.ca/wp-content/uploads/2006/08/chloroplast.gif

and http://biology.georgefox.edu/~jduerr/400px-Mitochondria.gif




The chloroplast and mitochondrion are designed for Efinency.

because energy is every thing for a cell they cant waste energy by having any unused spase. Also surface area is very important in being efficient.



The more granum a chloroplast has the faster it can make glucose by taking in sun light and

mixing it with the co2 and water to create glucose through photosynthesis. Because plants cells have there own chloroplast they can make there own glucose and are called autotrophic or self feeding.


The glucose is sent to the mitochondrion were it is turned into ATP by the inner membrane which you can see in my picture has a large surface area for efficiently. In animal cells there is no chloroplast we get our glucose from food. The mitochondrion is also designed to store the ATP molecules.