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Ghislain
04-03-2015, 04:50 PM
Biology

The creation of this thread came about because of my curiosity about Adenosine triphosphate or ATP (http://en.wikipedia.org/wiki/Adenosine_triphosphate).


Adenosine triphosphate (ATP) is a nucleoside triphosphate used in cells as a coenzyme, often called the "molecular unit of currency" of intracellular energy transfer.


http://www.youtube.com/watch?v=XI8m6o0gXDY

If you realise that wiki article's are best understood when one follows the blue links inserted, and then look at the wiki article on ATP in the link above, you may notice that the article is mainly blue; ATP isn't that easy to understand, so I needed a crash course in biology (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science) and that's exactly what I found.

The series of short videos below give a gripping and fun way to get a good overview of biology and hopefully, for me that is, an understanding. Why don't they teach like this in schools?

Each video will direct you to the next, but I included the links here so I could add some comments; it also makes a great reference.

Please note that these are just an overview of the given areas of reference and thus you are unlikely to procure a PhD (http://en.wikipedia.org/wiki/Doctor_of_Philosophy) from this material alone. ;)

Why Carbon is a tramp: Crash Course Biology 1 ( https://www.khanacademy.org/partner-content/crash-course1/partner-topic-crash-course-bio-ecology/crash-course-biology/v/bio101-carbon)

Water - Liquid Awesome: Crash Course Biology 2 ( http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-102)

Biological Molecules - You Are What You Eat: Crash Course Biology 3 ( http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-103)


If you want to see more about the individual Amino Acids, links to the 20 important ones, important because they're the ones that make up "us", are listed below in alphabetical order...

Alanine (http://en.wikipedia.org/wiki/Alanine), Arginine (http://en.wikipedia.org/wiki/Arginine), Asparagine (http://en.wikipedia.org/wiki/Asparagine), Aspartic_acid (http://en.wikipedia.org/wiki/Aspartic_acid), Cysteine (http://en.wikipedia.org/wiki/Cysteine), Glutamic_acid (http://en.wikipedia.org/wiki/Glutamic_acid), Glutamine (http://en.wikipedia.org/wiki/Glutamine), Glycine (http://en.wikipedia.org/wiki/Glycine), Histidine (http://en.wikipedia.org/wiki/Histidine), Isoleucine (http://en.wikipedia.org/wiki/Isoleucine), Leucine (http://en.wikipedia.org/wiki/Leucine), Lysine (http://en.wikipedia.org/wiki/Lysine), Methionine (http://en.wikipedia.org/wiki/Methionine), Phenylalanine (http://en.wikipedia.org/wiki/Phenylalanine), Proline (http://en.wikipedia.org/wiki/Proline), Serine (http://en.wikipedia.org/wiki/Serine), Threonine (http://en.wikipedia.org/wiki/Threonine), Tryptophan (http://en.wikipedia.org/wiki/Tryptophan), Tyrosine (http://en.wikipedia.org/wiki/Tyrosine) and last but not least Valine (http://en.wikipedia.org/wiki/Valine).


Eukaryopolis - The City of Animal Cells: Crash Course Biology 4 ( http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-104)

In Da Club - Membranes & Transport: Crash Course Biology 5 ( http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-105)


Correct me if I'm wrong, but I think the demonstration of osmosis with the sausage containing the salt solution was flawed. The net flow of fresh water would move into the sausage not the other way around. Hank confirms this when he explains what would happen to a blood cell placed in fresh water straight after this. Although some water from in the sausage would move into the fresh surrounding water more water moves into the sausage than out. I thought the video clip was a bit confusing, but it might be that pressure builds up in the sausage and so the salts begin to dilute into the fresh water under this pressure; not sure.

This is why you should never over-fertilise your plants as the strong fertiliser solution on the outside reverses the process and kills your plants!... I may be wrong :confused:, but I don't think so.


Plant Cells: Crash Course Biology 6 ( http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-106)

ATP & Respiration: Crash Course Biology 7 ( http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-107)

Photosynthesis: Crash Course Biology 8 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-108)

Heredity: Crash Course Biology 9 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-109)

DNA structure and replication: Crash Course Biology 10 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-110)

DNA, hot pockets, & the longest word ever: Crash Course Biology 11 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-111)

Mitosis: Splitting up is complicated: Crash Course Biology 12 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-112a)

Meiosis: Where the sex starts:Crash Course Biology 13 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-112b)

Natural Selection: Crash Course Biology 14 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-113)

Speciation: Of ligers & men: Crash Course Biology 15 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-114)

Animal development: We're just tubes: Crash Course Biology 16 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-115)

Evolutionary development: Chicken teeth: Crash Course Biology 17 ( http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-116)

Population genetics: When Darwin met Mendel: Crash Course Biology 18 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-117)

Taxonomy: Life's filing system: Crash Course Biology 19 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-118)

Evolution: It's a Thing: Crash Course Biology 20 ( http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-119)

Comparative anatomy: What makes us animals: Crash Course Biology 21 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-120)

Simple animals: Sponges, jellies, & octopuses: Crash Course Biology 22 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-121)

Complex animals: Annelids & arthropods: Crash Course Biology 23 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-122 )

Chordates: Crash Course Biology 24 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-123)

Animal behavior: Crash Course Biology 25 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-124)

The nervous system: Crash Course Biology 26 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-125)

Circulatory & respiratory systems: Crash Course Biology 27 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-126)

The digestive system: Crash Course Biology 28 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-127)

The excretory system: From your heart to the toilet : Crash Course Biology 29 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-128)

The skeletal system: It's ALIVE!: Crash Course Biology 30 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-129 )

Big Guns: The Muscular System: Crash Course Biology 31 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-130)

Your immune system: Natural born killer : Crash Course Biology 32 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-131)

Great glands - Your endocrine system: Crash Course Biology 33 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-132)

The reproductive system: How gonads go: Crash Course Biology 34 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-133)

Old & Odd: Archaea, Bacteria & Protists: Crash Course Biology 35 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-134)

The sex lives of nonvascular plants: Crash Course Biology 36 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-135)

Vascular plants = Winning!: Crash Course Biology 37 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-136)

The plants & the bees: Plant reproduction: Crash Course Biology 38 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-137)

Fungi: Death Becomes Them: Crash Course Biology 39 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-138)

Ecology - Rules for living on earth: Crash Course Biology 40 (http://www.khanacademy.org/science/biology/crash-course-bio-ecology/crash-course-biology-science/v/crash-course-biology-139)

Ghislain