This is the final video for chapter 6 which is so far focused on respiration
Make a note i realize i skipped over one of the powerpoint slides
For you to see the electron transport chain
It's a little bit more complicated than one
Dan the one in the last of the
Video
Just another way for you to look at it if you're struggling with that
If you're having a hard time with any part of respiration
Feel free to email me or make sure to go back and and watch the tutorials that are on ecampus
Search youtube goo
Google
Respiration electron transport chain
And of course read your textbook high but please email me if you're having any questions with it
Alright
So far we keep coming up glucose and how glucose is the starting molecule for aspiration
Well we're not mary poppins right we don't sit around eating spoonfuls of sugar all the time
We eat
Food that has proteins carbohydrates and fats
All in it
This picture is kind of complicated
But the take-home message here
Is that we are using the protein
Glucose
Glucose
The starting material that goes through this whole process of respiration
Very start to very end
But look at amino acid proteins are made up of amino acids
September the amino acids over there were 20 of them
And they all had that our group
7 more charged or partially charged of them had no charge
Depending on which amino acid were talking about
Then get converted into pyruvate
Can get converted into acetyl-coa and they hop into the krebs cycle and go from there
Are there proteins just bypass the seat and they just jump into random parts of the krebs cycle
Fats are kind of the same
Remember our fats
Glycerol backbone
Or two or three fatty acids
For the first thing that happens when we consume fat
The first break them down into the glycerol backbone and two fatty acids
The glycerol
Can get converted into pyruvate
And so no matter where they enter they've been
Follow
Finish up the respiration pathway
So i'm with you and say you know
Where does glycerol enter into respiration
I just want you to understand how these big complex macromolecules
Get broken down into their individual pieces
Let it be amino acids
Monosaccharides
Or glycerol with their fatty acids
Then from there there's simpler components enter into respiration different parts
Glucose
Sugars
Okay we use
All the things
Are food contains those proteins
And other carbohydrates
Alright respiration was an aerobic process because remember oxygen with the final electronics
But there are some organisms like
Some bacteria
In the presence of oxygen so there has to be other
Ways that these organisms can break down
Glucose or other food
Energy
So in these cases we have what are called
Anaerobic
Processes
An anaerobic
Without
Oxygen
Prophecies
Are going to be
Anaerobic
Respiration
And fermentation
And this is shown
This picture down here
I wanted to spell it out under the writing things out
Remember
That's one step of respiration does not require oxygen
Glycolysis
Can happen when oxygen can also occur
Abstract
Until that's real
Really really good
With respiration that we just talked about
That atp that was made can be used in mediately that nadh was stored energy and
Stop at the electron transport chain
Electron transport chain
And finally
Oxygen was that final electron acceptor i like that term better than
Terminal
Define electron acceptor with oxygen
Right and then it was turned into water
What happens if oxygen is bad
Well
With anaerobic respiration respiration means
Talked about
The only the real big difference is that oxygen cannot be used
So glycolysis is going to happen
That nadh is going to go to an electron transport chain
But now the final electron acceptor
It's going to use either like nitrogen
Or sulfur or some other
3d electronegative
Message with anaerobic respiration
Oxygen is the final electron acceptor
Okay but the overall gist
Between aerobic respiration and anaerobic respiration is very very similar they both have glycolysis
They both have
Krebs cycle they both have an electron transport chain
But
Aerobic respiration uses
Anaerobic respiration does not
Things are pretty different with fermentation though
Because again fermentation is best
Cake like houses is what they have in common
Let's write that down real big
Glycolysis
But this time we have a wee bit of a problem we're going to talk more about this problem here in just a minute
Basically
The atp is still going to be used for
Because with fermentation
There is no
Transport
There's nowhere
This is bad
Cheers wife
Because glycolysis
It's going to turn glucose into pyruvate
Nad plus
To make nadh
Number h represents a little electrons
So this is once it has been reduced or gained electrons
But you see the h4
Represent the electron
So it's oxidized form the form that does not have any
Is nad plus
It's what's right that down
This is the oxidized
Forum
So nad+ is needed to make nadh
Adp
That is used to make atp
What kind of write this out real quick
Glucose is used to make pyruvate
Nad + is used to make nadph and atp is used to make atp
Mentioned on the last slide during cellular respiration
Nadh drops off its electrons at the electron transport chain
And that's
Are there able to make a lot more atp
Well
Aerobic respiration
Needed
Possible
That's going to depend on aerobic respiration fermentation
As i already said anaerobic respiration still has the electron transport chain
Fermentation does not
So after glycolysis
There has to be some other reaction that happens
That is going to take that nadh and convert it back to
That way like hollis's can continue to happen because with fermentation
8 only atp that's made
Houses cannot shut down
Glycolysis will shut down
If that nad + friends out
So there has to be some way to take the nadh that's made
Use it
To recreate nad+ that way glycolysis kanki
All right so these are size it is kind of hard but i've been battling on here
Care about
Reiterate
Anaerobic respiration uses glycolysis a krebs cycle and electron transport chain
But the final electron acceptor is not oxygen something involving nitrogen
Glycolysis
And some other reaction to regenerate
That's really really important
Alright
For respiration
But that's not always true key now humans and animals we don't do
Photosynthesis
And other photosynthetic organisms
Also do
Respiration right cuz they're going to be building up that sugar
Write what's made at the end of photosynthesis
Sugar
That sugar is going to release even more
Energy
Energy to
Kind of look at how they're all related okay so let's start with photosynthesis
Atp they made nadph they release oxygen as waste
Okay
During aerobic respiration
Okay okay
Back to photosynthesis that atp and nadph that were made for the calvin cycle
Glucose through glycolysis
Remember
A carbon source for those carbon reactions of photos
Well remember also during glycolysis and krebs cycle that atp that was made
Making lots and lots of atp
Oxygen was that final electron acceptor
What does oxygen turn into
Water
Where does water go
That was the source of electrons during
Take a minute
Look at this picture look how everything is connected
Remember i want you to big picture of these processes
What goes in and out of photosynthesis what goes in and out of respiration
And what respiration is
This goes into respiration so i do expect you to know how these processes are related
