The following is true for electron transport in electron transport chain. a. Ele

Question

The following is true for electron transport in electron transport chain. a. Electrons are passed from NAD + to Complex l b. Electrons are passed from FAD to complex ll c. Complex l and II pass electrons to complex lll, which are then received by complex IV d. All of the above are true The following is true for electron transport chain. a. It is a series of redox reactions b. It is a series of phosphorylation-dephosphorylation reactions c. It is a series of reactions where acetyl group is transferred to coenzyme A d. All of the above are true is the product of beta-oxidation a. Fatty acid b. Acetyl CoA. c. Triacylglycerol d. Amino acid 33. Phospholipids are digested by enzymes, a. Triacylglycerol hydrolases b. Lipases c. Phospholipases d. Aminsae is the carrier of Fatty Acyl CoA to matrix of Mitochondria. a. Pyridoxyl phosphate b. ATP c. Carnitine d. Folate One molecule of stearic acid produces ATP. a.32 b.120 c. 200 d. None of the above

Explanation / Answer

30) Answer C- Complex I and II pass Electron to Complex III, which are then recieved by complex IV.
   Explaination: The electron transport chain consist of a series of electron transporters which are in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. S the first 2 options are ruled out.

31) Answer D all of the abve.
Explaination: Electron Transport Chain is the series of redox reaction involving phosphorylation -dephosphorylation.

32) Answer B Acetyl CoA.
Explaination: beta-oxidation is the catabolic process by which fatty acid molecules are broken down in the cytosol in prokaryotes and in the mitochondria in eukaryotes to generate acetyl-CoA.

33) Answer A triacylglycerols hyperlase
Explaination: Triglycerides or triacylglycerols account for about 90% of dietary lipids. They consist of one glycerol molecule esterified to three fatty acids, mostly long chain fatty acids (16-20 carbon atoms).

34) Answer C carnitine
Explaination: The inner mitochondrial membrane is impermeable to fatty acids and a specialized carnitine carrier system operates to transport activated fatty acids from cytosol to mitochondria.

35) Answer D none

Stearic acid /(molecular formula): C18H36O2. Fatty acids are broken into 2 carbon units to form acetyl-CoA. In this process of forming the acetyl-CoA from a fatty acid, a molecule of FADH2 and 1 molecule of NADH are formed.
The acetyl-CoA just formed then goes through the Krebs cycle, and it directly produces 1ATP, in addition to producing in addition to producing 3 more NADH and 1 more FADH2.
So to tally up so far, for every 2 carbons of your fatty acid you produce (kept in original production order):

1 FADH2
1 NADH
and 1 acetyl-CoA. This acetyl-CoA goes on to make

3 NADH
1 FADH2
1 ATP (directly makes it).

Now to tally the ATP made indirectly from all the FADH2's and NADH's,

each FADH2 gives you 2 ATP
Each NADH gives you 3 ATP.

So from our list above, for every 2 carbons in your fatty acid you get the following number of ATPs:

2 + 3 + (3*3) + 2 + 1(the directly made ATP) = 17 ATP for every 2 carbons.

Since you have a total of 18 carbons in stearic acid, this process takes place 18/2 = 9 times.

So mulitply the number of ATP produced for every 2 carbons times 9, so
17 * 9 = 153 molecules of ATP produced per 1 molecule of stearic acid.

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