Question

Answer the following questions in a few paragraphs.

**for good rating answer questions in a paragraphs

• What is the basic purpose of cellular respiration? What are the reactants and products of cellular respiration overall? Also, give a basic description of the three main stages of cellular respiration (glycolysis, Kreb cycle, and the electron transport chain)
• Your next paragraph will focus on your assigned inhibitor (Arsenic). You should find one to two reliable sources that discuss how your assigned inhibitor works. Focus on the enzyme inhibited by your assigned inhibitor, and the part of cellular respiration that would be affected.
• What effect would the presence of your assigned inhibitor have on ATP production? What effect would the presence of your inhibitor have on the amount of NAD+, NADH, pyruvate, and oxygen present in the cell?
• If cellular respiration is blocked, can cells switch to a backup method for making ATP?

**leave sources/links down below

Answer 1

CELLULAR RESPIRATION

The cells breakdown sugars to get energy is called cellular respiration. The sugars come from the food and the energy released in the form of ATPs. Most commonly the process use oxygen- called aerobic respiration.

The 3 main stages of cellular respiration include:

1. Glycolysis

2. Krebs cycle

3. Electron transport chain

GLYCOLYSIS

In this process, one glucos molecule is split into two pyruvate molecules with the help of about ten enzymes and use two ATPs. Glycolysis occurs in cytoplasm.

The pyruvate molecules formed through glycolysis is transported into mitochondria from which it get converted into acetyl CoA.

KREBS CYCLE

Acetyl CoA reacts with oxaloacetate and releases two molecules of carbon dioxide along with one molecule of ATP, three molecules of NADH and one molecule of FADH.

ELECTRON TRANSPORT CHAIN

The hydrogen molecules released in Krebs cycle are pumped into the mitochondria using energy that releases electrons. These electrons combines with some hydrogens and oxygen to form water and subsequently the hydrogen molecules stop being pumped. Eventually the hydrogen flows back into the cytoplasm of the mitochondria through protein channels. As hydrogen flows ATP is made from ADP and phosphate ions.

ARSENIC POISONING

  Arsenic act on sulfhydryl enzymes and interfeares with cell respiration. Arsenic inhibit the enzyme pyruvate dehydrogenase which catalyzes the oxidation of pyruvate to acetyl CoA by NAD+. It causes the production of ATP to stop, and cels cannot carry out their functions and they die.