(a) Explain why obligate anaerobes contain some citric acid cycle enzymes. (b) Why don’t these organisms have a complete citric acid cycle?

Q: Why does glycolysis require ATP investment on a thermodynamic and molecular level?

A: The process in which glucose is broken down to produce energy is called glycolysis. It  is the…

Q: Why is peroxidase (or catalase) required by organisms that use oxygen in metabolism?

A: Peroxidases, commonly referred as catalases, are another type of oxidoreductase enzyme that…

Q: The compound that enters the Krebs cycle isa. citric acid b. oxaloacetic acid c. pyruvic acid d.…

A: The metabolic pathway that involves the breakdown of glucose and the production of ATP is termed as…

Q: Explain how oxidation of a substrate proceeds without oxygen.

A: Oxidation in simple terms is the process by which any substance gains oxygen. It can also be defined…

Q: What are the steps involved in a Redox reaction that is catalyzed by a dehydrogenase enzyme?

A: Answer

Q: Which molecules can enter the Krebs cycle? a. chylomicrons b. acetyl CoA c. monoglycerides d. ketone…

A: Krebs cycle or Citric-acid cycle is a series of metabolic reactions taking place inside the body to…

Q: What is the function of cytochrome c oxidase?

A: Cytochromes oxidase also is known as complex IV. It is the terminal enzyme of the electron transport…

Q: How does oxidation of a molecule occur without oxygen?

A: The terms oxidation and reduction can be defined in terms of adding or removing oxygen to a…

Q: If ATP synthase completely stopped working, could glycolysis or the citric acid cycle still produce…

A: ATP synthase is part of the oxidative phosphorylation which oxidises the NADH and FADH2 to build the…

Q: Do any of the respiratory complexes play a role in the citric acid cycle? If so, what is that role?

A: The citric acid cycle is the oxidation of the molecules which was generated in the glycolysis…

Q: How many carbons from 13 original glucose molecules enter the Krebs cycle in the absence of oxygen?

A: Question - How many carbons from 13 original glucose molecules enter the Krebs cycle in the absence…

Q: What does it mean to say that during cellular respiration, electron carriers are reduced while the…

A: Let’s imagine we have  a cell. The cell has just been given a big, juicy glucose molecule, and we…

Q: How does cellular respiration benefit life on earth if it is a catabolic process?

A: Cellular respiration refers to intracellular oxidation of food to form ATP and reducing powers. It…

Q: Redox coenzymes that are used in cell respiration are

A: Cellular respiration can be described as the process in which the simpler food molecules combine…

Q: What would happen to the citric acid cycle if NADH and FADH2 were not reoxidized?

A: Citric acid cycle or TCA or Krebs cycle is the metabolic process in which the oxidation of acetyl…

Q: Why does the Krebs cycle operate only under aerobic conditionseven though it does not use molecular…

A: Respiration is the important chemical process that occurs in all living organisms including animals…

Q: Of the four reactions of the b-oxidation cycle, which onesare redox reactions?

A: Beta-oxidation is a metabolic process involving multiple steps by which fatty acid molecules are…

Q: List the main features of the citric acid cycle

A: Introduction: The citric acid cycle is a collection of eight biochemical reactions that all aerobic…

Q: Why are oxidation–reduction reactions important?

A: A redox reaction or an oxidation-reduction reaction can be described as a type of chemical reaction…

Q: When you eat starchy foods resulting in a breakdown to give glucose to the body, you have induced…

A: Biomolecules are the biological molecules that are present inside the living organisms. These…

Q: What two major roles do the citric acid cycle and glycolysis havein common?

A: Glycolysis refers to the metabolic pathway that forms three-carbon molecule pyruvate along with a…

Q: How many times must the TCA cycle be performed to oxidize one molecule of glucose completely to six…

A: TCA cycle is also called as tricarboxylic acid cycle or citric acid cycle or Krebs cycle. TCA cycle…

Q: Why is the citric acid cycle called a cycle?

A: Citric acid cycle is also known as Krebs cycle. It is a chain of chemical reactions. It takes place…

Q: Why can it be said that each glucose molecule runs the Krebs cycle twice?

A: The process of exchange of gases through different modes, like air or water, for their survival is…

Q: In anaerobic conditions (very low O2), glycolysis must be accompanied by fermentation. Why?

A: There are aerobic and anaerobic organisms. Anaerobic organisms are organisms that survive in the…

Q: What do the processes of fermentation and cellular respiration have in common?

A: Metabolism is process of various biochemical reactions that breaks and makes the molecules in the…

Q: Pyruvic acid is a product of glycolysis, but it is not the substance that joins with the pickup…

A: CITRIC ACID CYCLE It is a series of chemical reactions used by  aerobic organisms to release stored…

Q: What property of the various cytochromes ensures unidirectional electron flow along the…

A: Cytochromes, a family of metalloproteins which performs one-electron transfer reactions, in…

Q: A friend bets you a bazillion dollars that you can’t prove that the urea cycle is linked to the…

A: Introduction: The urea cycle that takes place in the liver is closely linked to the citric acid…

Q: Explain Biological Oxidation ?

A: Biological oxidation also named as respiration, a process by which cells derive energy with a…

Q: How does changing the concentration of enzyme affect the rate of decomposition of H2O2?

A: Enzyme Enzymes are globular protein molecules that catalyze a given reaction in a time-dependent…

Q: In the krebs cycle, if the enzyme used succinate dehydrogenase used NAD+ as the oxidizing agent,…

A: ▪︎ Krebs cycle is a series of eight steps that involve enzyme-catalyzed reactions. ▪︎It begins with…

Q: The bacterium E. coli is capable of performing aerobic respiration, anaerobic respiration, and…

A: The aerobic respiration can occur at the presence of oxygen. The steps includes, Glycolysis - 2 ATP…

Q: What is the main purpose/function of both cell breathing and fermentation for cells/living beings?

A: Introduction: The series of chemical reactions that occurs inside the living body for the production…

Q: What biochemical reaction is exhibited in the photosynthesis and cellular respiration? A)…

A: Answer 13- option D - oxidation -reduction.    photosynthesis and cellular respiration both involve…

Q: Infants do not have the ability to metabolize ethanol and are assumed to lack the enzyme alcohol…

A: Ethanol is used for in neonatal and infant liquid medications. However, the pharmacokinetics,…

Q: What citric acid cycle enzyme is also a component of the electron-transport chain?

A: An electron transport chain is a series of transfer electrons from one molecule to another and…

Q: What are the similarities and differences between fermentation and cellular respiration?

A: Both cellular respiration and fermentation are processes that break down food and convert the…

Q: What exergonic reaction is catalyzed by redox enzymes called dehydrogenase?

A: An exergonic reaction is one in which the energty level of the products is lower than the energy…

Q: How many C02 molecules are produced from the complete oxidation of stearic acid through catabolic…

A: Beta-oxidation of fatty acid involves the hydrolysis of long-chain fatty acid which removes…

Q: Explain the process of B-oxidation. What is the result of each cycle?

A: Beta oxidation is the metabolic process by which fatty acid molecules are broken down to its simpler…

Q: What citric acid cycle intermediate would be regenerated?

A: A sequence of metabolic pathways takes place in the process of cellular respiration to transform…

Q: In the citric acid cycle, the starting molecule is and the output molecule is

A: Citric acid cycle  Citric acid cycle or Kreb's cycle or TCA cycle is a series of reactions that…

Q: How many water molecules are used for one complete turn of krebs cycle?

A: The tricarboxylic acid also called krebs or citric acid cycle is an essential source of energy for…

Q: Where in the cell does b oxidation take place?

A: Beta oxidation is oxidation of beta carbon of a fatty acid chain to a carbonyl group.  The chain of…

Q: At the end of the citric acid cycle, but before the subsequent steps of cellular respiration, which…

A: Cellular respiration is a metabolic process. Cellular respiration is also a oxidative process in…

Q: Name the products of the citric acid cycle.

A: The citric acid cycle is also known as the TCA cycle. The TCA cycle occurs inside the mitochondrial…

Q: What is the primary difference between fermentation and anaerobic respiration?

A: Respiration is the specific process by which O2 is taken into the body and co2 is expired out. There…