In the presence of oxygen, the three-carbon compound pyruvate can be catabolized in the citric acid cycle. first, however, the pyruvate (1) loses a carbon, which is given off as a molecule of co2, (2) is oxidized to form a two-carbon compound called acetate, and (3) is bonded to coenzyme a. which of the following sets of products result from these reactions?
(a) acetyl coa, o2, and atp.
(b) acetyl coa, fadh2, and co2.
(c) acetyl coa, fad, h2, and co2.
(d) acetyl coa, nadh, h+, and co2.
(e) acetyl coa, nad+, atp, and co2.

(D) acetyl CoA, NADH, H+, and CO2.

Explanation:

The given explanation is about oxidative decarboxylation of pyruvate into acetyl CoA and carbon dioxide. The reactions are catalyzed by enzyme complex pyruvate dehydrogenase. During the reaction, pyruvate loses one of its carbon atoms in the form of CO2 and the rest of two carbons form the acetate which in turn combines with CoA to form the acetyl CoA.  

Since it is an oxidative decarboxylation, the released electrons are accepted by NAD+ which in turn is converted into NADH + H+.  

Overall, there is the formation of one molecule of acetyl-CoA, CO2 and NADH + H+ each from one molecule of pyruvate.  

this protocol provides a detailed procedure for agarose-based ip to purify and enrich the protein of interest.

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !