Acyl-coa + fad ↔ trans-δ2-enoyl-coa + fadh2 (note: the double tipped arrow means forward and reverse)

this is the first reaction of β-oxidation. which of the following statements about this reaction is true.

a. acyl-coa is the electron acceptor.
b. trans-δ2-enoyl-coa has a lower affinity for electrons than fadh2.
c. fad is the oxidizing agent.
d. fadh2 is spontaneously reduced.

c) FAD is the oxidizing agent

Explanation:

The β-oxidation is a catabolic process where fatty acids are degraded into a final product: Acetil-CoA. In order this process occurres, the fatty acid chain is being removed from a pair of carbon atoms on each cycle

Before the β-oxidation takes place, the fatty acid molecule should be activated, so it can go through the mitochondrial membrane into (via a carnitine translocator)

Once the activated molecule is inside the mitochondrial matrix, it can go through the β-oxidation: the first step is the oxidation of the fatty acid, with the enzyme Acyl-CoA-dehydrogenase (this enzyme catalyzes the creation of a double bond between carbon-2 and carbon-3.

This enzyme has attached a coenzyme: FAD, which takes the electrons (from the fatty acid oxidation) and becomes a reduced component: FADH2:

Acyl-CoA + FAD ↔ trans-Δ2-enoyl-CoA + FADH2

precipitation

explanation:

when it goes from cloud to rain/back to earth in the form of rain

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: