Fat Degregation It Mitochondria Flashcards

1
Q

What do we produce from even numbered fatty acids?

A

We produce acetyl CoA, NADH, and FADH2 through beta-oxidation.

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2
Q

Where does the production of ATP from fatty acids occur?

A

It occurs in the mitochondria.

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3
Q

What are the four steps of beta-oxidation?

A
  1. Oxidation, 2. Hydration, 3. Oxidation, 4. Cleavage.
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4
Q

What is produced in each round of beta-oxidation?

A

Each round produces 1 FADH2, 1 NADH, and 1 Acetyl CoA.

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5
Q

How much ATP is produced from a 16-carbon fatty acid?

A

About 100 ATP are produced from a 16-carbon fatty acid.

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6
Q

How many ATP are required for each fatty acid breakdown?

A

2 ATP are required for each fatty acid breakdown.

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7
Q

Do unsaturated and saturated fatty acids produce the same amount of ATP?

A

Yes, they produce the same amount of ATP.

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8
Q

What is the function of Enoyl CoA isomerase?

A

It moves double bonds to C2-3 and changes the double bond from cis to trans.

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9
Q

What happens to odd-chain fatty acids during oxidation?

A

They produce a 3-carbon molecule, Propionyl-CoA, which is converted to Succinyl-CoA.

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10
Q

How does the ATP yield of a 20-carbon fatty acid compare to a 21-carbon fatty acid?

A

A 20-carbon fatty acid produces more ATP than a 21-carbon fatty acid.

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11
Q

When are ketone bodies used?

A

They are used in non-normal states of needing energy, such as pathogenic conditions or starvation.

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12
Q

Where are ketone bodies formed and used?

A

They are formed in the liver and used by the brain, heart, and kidneys.

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13
Q

What happens to acetone in ketone body metabolism?

A

Acetone is not a usable ketone body.

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14
Q

What are the two main ketone bodies formed from acetyl CoA?

A

Acetoacetate and 3-hydroxybutyrate.

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15
Q

What is the role of CoA transferase?

A

I makes ketone

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16
Q

How many acetyl CoA can ketone bodies be broken down into?

A

Both ketone bodies can be broken down into two acetyl CoA.

17
Q

Which ketone body produces more ATP?

A

3-hydroxybutyrate produces 2.5 ATP more than acetoacetate due to NADH being produced.