Biochem question and answer Assignment Example | Topics and Well Written Essays - 250 words

Biochem question and answer - Assignment Example Milk proteins are digested in the stomach and duodenum by proteolytic enzymes into peptides and finally amino acids that are absorbed in the small intestines. Bile salts emulsify fats after which pancreatic lipase breaks them into fatty acids and glycerol molecules that are absorbed in the ileum. The sucrose is broken down into glucose and fructose in the duodenum by enzyme sucrase, and the monosaccharides are absorbed in the ileum (Digestion and absorption, n.d.). Apples and carrots contain vitamins and mineral salts, which do not undergo digestion, but are directly absorbed into the small intestines. Oxidative phosphorylation is a metabolic pathway, which utilizes energy from the oxidation of food to produce ATP. All the electrons from NADH and FADH2 go to the oxidative phosphorylation cycle following release from the TCA cycle. Oxidative phosphorylation takes electrons from these molecules and transfers them to oxygen, making ATP in the process. This process occurs in the mitochondria. NADH and FADH2 are oxidized into NAD+ and FAD, whereas oxygen is reduced by H+ ions into water. NAD-linked dehydrogenases remove electrons from substrates to NAD in reversible reactions. The malate-aspartate shuttle or the alpha-glycerol phosphate shuttle conveys electrons from NADH outside the mitochondria (the two complexes involved in the process). Blood supplies oxygen to the process. A specific translocase exchanges ADP outside the mitochondria for ATP inside the mitochondria. The end products are water, ATP, and NAD+ or FAD. Cyanide, azide, and CO are metabolic poisons, which are so toxic t o us because they block the transfer of electrons to oxygen hence inhibiting the whole process (Gilbert,

Cheating Essay Example | Topics and Well Written Essays - 250 words

Cheating - Essay Example Cheating can also be used interchangeably with infidelity, when someone â€Å"cheats† on his or her spouse or partner; it means they are involved in an affair with another person in secret. Herein, cheating involves dishonesty since one has made their partner believes they are faithful to them and the fact that they are emotionally or physically involved with someone else constitutes cheating. In this case, it can involve anything from sexual activity to holding hand, kissing or/making out depending on the understating of the parties concerned. Cheating can also involve using unfair methods to win or gain advantage in a situation that should otherwise be neutral for all. For instance, a student entering the exam room with notes or gaining access to the questions prior to the exam; such individuals are cheating because they increase their chances of outperforming their colleagues, not by working harder, but by manipulating circumstance to make the exam easier for them. Ultimately, cheating denotes and connotes deliberate dishonesty or deception, and from the examples given, it is clear that cheating is used to give people an unfair advantage, deceive and /or exploit