How are long-chain fatty acids released from triacylglycerides transported through the bloodstream?

Question

Accepted Answer

Hi, everybody. Let's look at our next question. What happens to long chain fatty acids when they are released from tri ay Glycerol A, when there is an abundance of energy, it is transformed into tri ayl glycerol and stored in adipose tissues. B when cells require energy, the carbon atoms of fatty acids are activated by being converted into fatty acyl coa and then they are reduced to acetyl coa C all the above or d none of the above. Well, it might help to remember remember that tri ao glycerol are also known. So A K a also known as triglycerides. It's often a more commonly used name and it might help you remember what these are. So, triglycerides are a Glycerol molecule with three fatty acid chains linked to it by ester linkages. So what happens when these fatty acids are released? So we no longer have them attached in the form of a triglyceride. We now just have fatty acids that are loose for lack of a better word. So, fatty acids, well, things can go one of two ways that sort of cyclical processes processes here. The fatty acids could be converted back into triglycerides by a synthesis process. So put synthesis and put try, I'll put tri Alyce Glycerol. That's the terminology our question is using or if we need energy, we could break these down and get energy from them and then they would be broken down eventually into a cy ka. Now this is a stepwise process where for each round one molecule of acetyl coa which is a two carbon molecule is released. So they kind of get broken down two carbons at a time. And this process of being broken down to Silka is called beta oxidation. And from the name of this process, we can eliminate one of our answer choices because this is a process of oxidation. But when we look at our answer choices, the one that refers to breaking down the fatty acids ending up with acetyl coa says that the carbon atoms of fatty acids are activated and then reduced to acetyl coa. But this is not correct. This is a process of oxidation. So that should be oxidized to a Cy ka. So choice B is not correct, which means we can elim to see all of the above. So choice A says when there's an abundant of energy, it is transformed into tri ayl glycerol and stored in adipose tissue. And this is true. So choice A is correct. And so choice D none of the above is not correct. And therefore choice A is going to be our answer just to make our diagram complete here. So we see the fatty acids can we, we want to know what happens to fatty acids. So they, if there's plenty of energy around the cell doesn't need to break them down. They get converted back into triglycerides to be stored in adipose tissue. If the cell needs energy, they're broken down by the process of beta oxidation. But obviously, this can go the other way around. As we said, fatty acids can be released from tricil glycerol by hydrolysis. And then of course, a seal K A through lipogenesis can be built back up into fatty acids. But what we're focused on are these processes of beta oxidation and synthesis because we're starting from fatty acid and saying what direction does it go? And our correct answer here to what might happen to these fatty acids is choice. A when there's an abundance of energy is transformed into tri ay glycerol and stored in adipose tissue. See you in the next video.

How are long-chain fatty acids released from triacylglycerides transported through the bloodstream?

Verified video answer for a similar problem:

Key Concepts

Triacylglycerides

Fatty Acid Release

Lipid Transport in Bloodstream