Enzymes and substrates are related in two main ways because they frequently interact with each other in many biological processes.
1. Enzymes and substrates are often specific for one another. They have shapes that can be modified to fit into each other which allows them to bind together (induced fit).
2. Together, Enzymes and substrates undergo some transformations as they interact. They interact by forming hydrogen bonds, covalent bonds and what is also called hydrophobic interactions.
The enzyme returns to its original shape and state after the reaction but the substrate is often modified or changed completely into a new, different product.
Evolutionary Theory of Aging describes t<span>he view that natural selection has not eliminated many harmful conditions and nonadaptive characteristics in older adults. N</span>atural selection is linked to reproductive fitness, which is present only in the earlier part of adulthood. According to evolutionary theory, possibly if some disease occurred earlier in development, it might have been eliminated many centuries ago.
Answer:
The correct answer is - a. NADH
Explanation:
The Krebs cycle is a set of chemical reactions that takes place to generate energy from nutrients such as carbohydrates, fats, and proteins converting to carbon dioxide. by oxidation of acetate.
In the Krebs cycle, each molecule of carbon generates 3 molecules of NADH, one molecule of ATP and 2 molecules of FADH2 in each cycle. Thus, the greatest numbers during one turn of the Krebs cycle is NADH.
<span>Definition of a hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom covalently bound to a highly electro negative atom such as nitrogen, oxygen, or fluorine experiences. Hope this helps </span>
