Lec 7 | MIT 7.014 Introductory Biology, Spring 2005

[constantnag]

This makes me feel clever, cause if you do A-level biology in England, you learn this before college.

[plonjcc]

well, it was just a matter of time before i found the good side of youtube

[Tugboatii]

I am a biology teacher and want to compliment the professor in doing a fine job explaining the energy pathways without getting too bogged down by the details. He presents the important concepts and even includes the important aspect of evolutionary connections between them very effectively. My advice to anyone interested in biology watching this is understand every word he speaks! He is doing the observer a great service by efficiently saying so very much.

[MrSub4]

for all you athletes listen very close at 21:00. this is how world class performance is achieved.

[MrSub4]

check out spiderman in the front row. 17:20

[sushyanlin]

Thank you MIT!

[pocoso]

awesome

[tetranoob]

This teacher is awesome

[bonajab]

Is there another process besides glycolysis that would also work? Is glycolysis an inefficient process? Could there be reasons why it is actually more beneficial than other processes if they've been dreamed up?

[marcriganoskate]

why don't you look it up?

[alsamaw65]

Glycolysis is perfect for life because of the fact that it is consistent in maintaining physiological condition and at the same time taking a very exothermic reaction and breaking it up into parts because other wise the process would kill the cell. Next the first step in creating glucose 6 phosphate the cell converted the glucose to something else quickly therefore maintaining low concentration of glucose inside the cell in opening the way for more glucose to enter through facilitative diffusion

[alsamaw65]

Finally in order for the process to change there would need to be mutations in numerous areas for it to be a bifacial mutation therefore decreasing the chance of this occurring without the crippling of killing the organism. And besides the substrate that initiates glycolysis is delicious glucose, I would not rather have it any other way(just a joke because lets suppose a substrate other then glucose was used in living cells we would think that substrate would taste good not glucose)