Table of Contents
What is an activated carrier?
Definition: Small molecule carrying a chemical group in a high-energy linkage, serving as a donor of energy or of the chemical group in may different chemical reactions. Examples include ATP, acetyl CoA, and NADH.
What are activated carriers in metabolism?
Activated carriers are molecules that contain energy which is released to power energetically unfavorable chemical reactions. activated carriers are necessary for the metabolism of many different processes.
What are carrier molecules?
Carrier molecules are usually proteins bound to a nonprotein group; they can undergo oxidation and reduction relatively easily, thus allowing electrons to flow through the system. There are four types of carrier: flavoproteins (e.g. FAD), cytochromes, iron-sulphur proteins (e.g. ferredoxin), and ubiquinone.
What is the role of activated carriers in cells quizlet?
What is the role of activated carriers in cells? They capture energy from energy releasing reactions and transfer it to other reactions.
Which activated carrier is generated during glycolysis?
NADH
ATP (Adenosine triphosphate): The major energy currency of the cell. ATP is a high-energy molecule that stores and transports energy within cells. NADH: High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain.
What are the carrier molecules used in active transport?
(See below.) Active transport uses carrier proteins, not channel proteins. These carrier proteins are different than the ones seen in facilitated diffusion, as they need ATP in order to change conformation.
Is carrier mediated transport active?
Amino acids, glucose and certain other sugars are taken up by carrier-mediated mechanisms which may be either passive or active according to the type of cell.
Which of the following is an activated carrier of high-energy electrons?
FADH2, like NADH and NADPH, carries hydrogen and high-energy electrons.
How do the high-energy electrons of activated carriers contribute?
How do the high-energy electrons of activated carriers contribute to forming the high-energy phosphate bonds of ATP? They are used by the electron-transport chain to make a proton gradient. mechanical rotation that is converted into the chemical-bond energy of ATP.
What processes produce electron carriers?
What Are Electron Carriers? Cellular respiration can be divided into three main steps, glycolysis, the citric acid cycle, and oxidative phosphorylation. During the first two steps, molecules called electron carriers harvest electrons from glucose.
What are electron carriers in glycolysis?
NADH: High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain. FADH2: High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain.
How do carrier proteins work in active transport?
Active transport requires specialized carrier proteins and the expenditure of cellular energy. Carrier proteins allow chemicals to cross the membrane against a concentration gradient or when the phospholipid bilayer of the membrane is impermeable to a chemical (Fig. 1).