What Is the Krebs Cycle?

The Krebs cycle definition is a sequence of chemical reactions that occur in the body. The cycle starts with the intake of food, which is broken down into small molecules by the stomach and intestines. These molecules are then absorbed by the body through the small intestines and transported to the liver via the bloodstream. In the liver, the molecules are broken down further into smaller pieces called amino acids. In the next step of the cycle, these amino acids are converted into glucose through a series of chemical reactions called phosphorylation. Then, the glucose enters the main cells of the body and can be used for energy or can be stored as glycogen for later use. When the body needs more energy, it stores the excess glucose as glycogen. Glycogen is a form of starch stored in the liver and muscles that is used by the body for energy during periods of fasting or when no food is eaten for an extended period of time. If the body has excess energy after using up its supply of glycogen, it can then break down the remaining stored fat into fatty acids.

Where Does the Krebs Cycle Take Place?

The Krebs cycle takes place exactly in (the mitochondrial matrix) and converts mitochondrial pyruvate into carbon dioxide and water. The mitochondrial matrix is a dense solution that surrounds the crests of the mitochondria. This matrix contains water, all the needed enzymes, coenzymes, and phosphates which are necessary for the Krebs cycle reactions.

Nourhan Essam - PraxiLabs

Nourhan Essam

Nourhan Essam is a Senior Content Writer at PraxiLabs, with a deep passion for crafting impactful scientific content. With over 6 years of experience, she has developed robust expertise in e-learning, education, science, and digital marketing. Nourhan leverages her comprehensive understanding to produce high-quality, compelling, and informative pieces in both Arabic and English. Dedicated to enhancing the quality of scientific content, she ensures that each piece is engaging, educational, and aligned with the needs of her audience.

The Krebs Cycle | A Step-by-Step Explanation

Nourhan Essam January 2, 2023 Biology

Last Updated on March 5, 2024 by Nourhan Essam You’ve probably heard the phrase Krebs cycle thrown around before. If you’re at all interested in biology, general science, etc. Then you know that the Krebs cycle has a vital role inside our bodies. But what exactly is it? Why does it deserve such an important name? You know what I’m …

Separating Mixtures| Learn How to Get Fresh Water From Sea Water

Nourhan Essam December 20, 2022 Chemistry, Physics

Last Updated on December 20, 2022 by Nourhan Essam Have you ever thought about how we can get fresh water from sea water? Or how can we get the skim milk? Or how is blood separated into its four components in hospitals and blood banks? Sand and water/ Cereal and milk/ Sugar and salt/ Salt and water/ Water and ethanol/ …

Top 10 Microbiology Techniques You Can’t Miss

Nourhan Essam December 6, 2022 Biology

Last Updated on June 18, 2023 by Sara Assem To understand and study the world of microorganisms, we need special techniques or methods that are called “Microbiology techniques”. Microbiology techniques are the methods used for studying microbes (ex: bacteria, fungi and protest). The purpose of these techniques include microbial identification, staining, engineering, survey, culturing and manipulation. What are Microbiological Techniques? …

Learn All About The Strong Acids and Bases

Nourhan Essam December 4, 2022 Chemistry

Last Updated on June 18, 2023 by Sara Assem Acids and Bases play a vital role in our life and all of the environment around us. When you brush your teeth with toothpaste or wash your hands with soap or take your coffee, you’ve already experienced acids and bases. In chemistry, substances are classified as acids or bases or neutral, …

Recrystallization | Definition, Principle, Purpose, Steps, Applications and More

Nourhan Essam November 7, 2022 Chemistry

Last Updated on November 5, 2024 by Nourhan Essam What is Recrystallization? The recrystallization definition is a process used for purifying compounds that contain impurities and these compounds are: – Dissolved at solvents. – Solids at room temperature. – Obtained from chemical reactions or natural sources. On the other hand, the impurities include mixtures of soluble, insoluble, and colored substances. …