NAD is a coenzyme found in all cells. It consists of two nucleotides linked through their phosphate groups with a nucleotide that contains an adenosine ring and another that contains nicotinamide.
Explanation:
In metabolism, NAD participates in oxidation reduction reactions. This coenzyme is found in two forms in the cells: NAD and NADH. NAD accepts electrons from other molecules and is reduced, forming NADH, which you can use as a reducing agent to donate electrons. These electron transfer reactions are the main function of the NAD.
In living organisms, NAD can be synthesized from scratch from the amino acids tryptophan or aspartic acid. Some NADs are found in nicotinamide adenine dinucleotide phosphate (NADP), whose chemistry is similar to NAD, although it has different functions in metabolism.
Multiple ways that we can minimise the option of plastic are by reusing different plastics, use compost bins, and use reusable grocery bags or reuse plastic bags when grocery shopping, buy secondhand items and donate used goods, and RECYCLE!!
The answer would be C, as many streams/rivers carry plant seeds, dispersing them. If there was a drought, these seeds wouldn't be able to float on the stream and disperse.
