What you need to pass the IB
Here is some information to explain what you need in order to pass your IB:
*At least three subjects must be completed at Higher Level (HL) and three at Standard Level (SL).
*Should four subjects be completed at HL then only two need be completed at SL.
*All six subjects must have been awarded a numerical grade higher than 1, with a minimum total score of 24.
*The CAS requirement of 150 hours must have been completed.
*The Extended Essay and TOK course must have been completed and essays submitted.
*Additionally a grade D or better must have been awarded in either the Extended Essay or TOK.
*If the overall score is 24-27, there is no grade 2 at HL and not more than one grade 2 at SL; if the overall score is greater than or equal to 28, not more than one grade 2 at HL and no more than two grades 2 at SL; altogether, there are no more than three grades 3 or below.
*At least 12 points (12 for overall score 24-27; 16 if four HL subjects are taken) must have been gained on HL subjects, and 9/8 (6/5 if only two SL subjects are taken) on SL subjects.
*The final award committee has not judged the candidate to be guilty of malpractice.
*A minimum amount of hours must be achieved per year by students in order to pass. If an excessive amount of hours are missed, they may have to resit the year.
*At least three subjects must be completed at Higher Level (HL) and three at Standard Level (SL).
*Should four subjects be completed at HL then only two need be completed at SL.
*All six subjects must have been awarded a numerical grade higher than 1, with a minimum total score of 24.
*The CAS requirement of 150 hours must have been completed.
*The Extended Essay and TOK course must have been completed and essays submitted.
*Additionally a grade D or better must have been awarded in either the Extended Essay or TOK.
*If the overall score is 24-27, there is no grade 2 at HL and not more than one grade 2 at SL; if the overall score is greater than or equal to 28, not more than one grade 2 at HL and no more than two grades 2 at SL; altogether, there are no more than three grades 3 or below.
*At least 12 points (12 for overall score 24-27; 16 if four HL subjects are taken) must have been gained on HL subjects, and 9/8 (6/5 if only two SL subjects are taken) on SL subjects.
*The final award committee has not judged the candidate to be guilty of malpractice.
*A minimum amount of hours must be achieved per year by students in order to pass. If an excessive amount of hours are missed, they may have to resit the year.
IB Biology assessment
For info about assessment for IB biology (your exams and what they will be like), please click the link below
IB biology assessment
IB biology assessment
Nerve Impulses
Find out how nerve impulses travel through the body by clicking on the link below to biologymad.com. This is a website designed for the old A level biology exam, but contains a lot of info useful for the IB.
How nerve impulses travel
Hip hip hooray.... for DNA
by Peter Weatherall
In every living cell,
There’s a useful tool,
Containing information,
In a molecule.
Chorus:
Hip Hip Hooray for DNA,
It provides the key,
To the plans for making,
Everything in you and me.
A single strand of DNA,
Can alphabetically,
Be sequenced by the letters,
A, C, T and G.
Chorus
The letters can be put into groups of three,
Which go to make a genetic recipe eeeee,
Cells can use this recipe,
Written down in genes,
To decipher how to make,
All of our proteins.
Chorus
Proteins can be used
To make body parts,
Such as lungs and livers,
kidneys and heaaarts.
Chorus
….To the plans for making
Everything in you and me.
Watch the video here
In every living cell,
There’s a useful tool,
Containing information,
In a molecule.
Chorus:
Hip Hip Hooray for DNA,
It provides the key,
To the plans for making,
Everything in you and me.
A single strand of DNA,
Can alphabetically,
Be sequenced by the letters,
A, C, T and G.
Chorus
The letters can be put into groups of three,
Which go to make a genetic recipe eeeee,
Cells can use this recipe,
Written down in genes,
To decipher how to make,
All of our proteins.
Chorus
Proteins can be used
To make body parts,
Such as lungs and livers,
kidneys and heaaarts.
Chorus
….To the plans for making
Everything in you and me.
Watch the video here
The Story of Ernest Rutherford
Ernest Rutherford came up with his "orbital model" of the atom while working at Manchester University. He also did a series of experiments with radioactivity, and was awarded the Nobel Prize in 1908.
Have a look at this video which explains some of his work:
Natural decay (The Radioactivity Song)
By Mark Rosengarten.
listen to the song
The nucleus of an atom is filled with lots of stuff,
There's protons and there's neutrons, thats really quite enough,
But sometimes an atom has too much of one of these,
And lets slip out decayed particles, kind of like a sneeze.
Its decay,
Natural decay,
HOORAY!
Its decay,
Natural decay,
HOORAY!
Some nucleii spew out whats looks like helium,
It's an alpha particle, made by uranium,
It's nuclear notation, it is 4,2 He,
And it is really dangerous, causes burns to you and me.
It's decay,
Alpha decay,
HOORAY!
It's decay,
Natural decay,
HOORAY!
Nucleii like C14 give a little, biddy sneeze,
It's a beta particle, an electron if you please,
It can travel fast, but it don't take much to stop,
Turns a neutron to a proton, watch the Geiger counters hop.
It's decay,
Beta decay,
HOORAY!
It's decay,
Natural decay,
HOORAY!
Isotopes of potassium emit a positron,
Its called beta positive, don't know who's side it's on,
A proton becomes a neutron, the mass remains the same,
And that is how the positron plays the nuclear game.
It's decay,
Positron decay,
HOORAY!
It's decay,
Natural decay,
HOORAY!
When a nucleus emits any of these,
It can also give off gamma,
With instability its easy,
It goes at the speed of light, 'cos that's really what it is,
And it has no mass or charge,
Only lead can stop it whiz.
It's decay,
Gives off gamma rays,
HOORAYS!
It's decay,
Natural decay
HOORAY!
listen to the song
The nucleus of an atom is filled with lots of stuff,
There's protons and there's neutrons, thats really quite enough,
But sometimes an atom has too much of one of these,
And lets slip out decayed particles, kind of like a sneeze.
Its decay,
Natural decay,
HOORAY!
Its decay,
Natural decay,
HOORAY!
Some nucleii spew out whats looks like helium,
It's an alpha particle, made by uranium,
It's nuclear notation, it is 4,2 He,
And it is really dangerous, causes burns to you and me.
It's decay,
Alpha decay,
HOORAY!
It's decay,
Natural decay,
HOORAY!
Nucleii like C14 give a little, biddy sneeze,
It's a beta particle, an electron if you please,
It can travel fast, but it don't take much to stop,
Turns a neutron to a proton, watch the Geiger counters hop.
It's decay,
Beta decay,
HOORAY!
It's decay,
Natural decay,
HOORAY!
Isotopes of potassium emit a positron,
Its called beta positive, don't know who's side it's on,
A proton becomes a neutron, the mass remains the same,
And that is how the positron plays the nuclear game.
It's decay,
Positron decay,
HOORAY!
It's decay,
Natural decay,
HOORAY!
When a nucleus emits any of these,
It can also give off gamma,
With instability its easy,
It goes at the speed of light, 'cos that's really what it is,
And it has no mass or charge,
Only lead can stop it whiz.
It's decay,
Gives off gamma rays,
HOORAYS!
It's decay,
Natural decay
HOORAY!
Carbohydrates
I recommend everybody visits the Royal Society of Chemistry at some time in their lives. Here is a link to their information about carbohydrates for IB students:
Carbohydrates
Carbohydrates
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