All redox chemistry of the pyridine nucleotide coenzymes takes place at the 4-position of the pyridine ring.
<h3>What are pyridine nucleotide coenzymes?</h3>
The pyridine nucleotide coenzymes are specific coenzymes responsible for oxide reduction reactions during cellular respiration.
The pyridine nucleotide coenzymes include nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide phosphate (NADP) and they function by accepting/donating electrons during chemical reactions of the cellular respiration.
In conclusion, all redox chemistry of the pyridine nucleotide coenzymes takes place at the 4-position of the pyridine ring.
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Answer & Explanation:
The most basic difference between RER and SER is the presence of ribosomes. When ribosomes attach to the surface of an ER, it gives a characteristic rough appearance; hence it is called Rough ER. On the other hand, a smooth ER does not have ribosomes on its surface. It possesses ribosomes attached to its membrane.
Sedimentary rocks are formed by cementation and compaction. This happens when sediment particles are compressed and fused together over very long periods of time.
A chemical interaction is compelled by electrostatic forces which can occur both in vitro (studies are done outside living organisms), and in vivo (scientists conduct their studies with the use of whole living organisms). In simpler terms a chemical reaction is a change that occurs when two or more substances combine to form a new substance.
Nucleolus is not connected to the nucleus via nuclear pores.
<span>Nuclear pores are protein complexes that cross double membrane of the nucleus and allow the transport of molecules across the nuclear envelope (double membrane): from the nucleus to the cytoplasm (RNA and ribosomal proteins) and into the nucleus (proteins, carbohydrates, signalling molecules and lipids).</span>