Table of Contents
- 1 What is the main function of pentose pathway?
- 2 What is the main function of the pentose phosphate pathway quizlet?
- 3 What is meant by pentose?
- 4 What is the purpose of producing NADPH in the pentose phosphate pathway?
- 5 What is the role of NADPH in RBCs Mcq?
- 6 What is the difference between glycolysis and glycolytic pathway?
- 7 When does pentose phosphate pathway take place?
- 8 What is the rate-limiting step for pentose phosphate pathway?
What is the main function of pentose pathway?
The primary results of the pathway are: The generation of reducing equivalents, in the form of NADPH, used in reductive biosynthesis reactions within cells (e.g. fatty acid synthesis). Production of ribose 5-phosphate (R5P), used in the synthesis of nucleotides and nucleic acids.
What is the main function of the pentose phosphate pathway quizlet?
What is the purpose of the pentose phosphate pathway? To produce NADPH, which is a heavy-duty reducing agent. To produce ribose-5-phosphate, which is used in the synthesis of nucleotides and nucleic acids.
What is the function of the pentose phosphate pathway in organisms that use it?
The pentose phosphate pathway meets the need of all organisms for a source of nicotinamide adenine dinucleotide phosphate (NADPH) to use in reductive biosynthesis, such as fatty acid, cholesterol, neurotransmitter, and nucleotide biosynthesis, and synthesizes five-carbon sugars (Figure 1).
What is the main function of the pentose phosphate pathway Mcq?
Explanation: The main function of pentose phosphate pathway is to supply pentoses to NADPH.
What is meant by pentose?
Definition of pentose : a monosaccharide C5H10O5 (such as ribose) that contains five carbon atoms in the molecule.
What is the purpose of producing NADPH in the pentose phosphate pathway?
Instead, it supplies NADPH and ribose 5-phosphate (R5P). These two metabolites are vital for the survival and proliferation of cells. R5P is a building block for nucleic acid synthesis. NADPH is the reducing power required for the synthesis of fatty acids, sterols, nucleotides and non-essential amino acids (1, 2).
Why is the pentose phosphate pathway more active in cells that are dividing than in cells that are not?
The pentose phosphate pathway is active in dividing cells because the pentose phosphate pathway is a metabolic pathway which produces ribose 5-phosphate. Without it, DNA replication cannot take place which means the cell cycle would be halted in the G1 phase and the cell could not divide.
What is the role of NADPH in RBCs?
NADPH is important in maintaining glutathione in its reduced form, which protects the red blood cell against oxidative stress. The pentose monophosphate shunt is the only means of NADPH generation in red blood cells and therefore crucial in protecting red cells against oxidative damage.
What is the role of NADPH in RBCs Mcq?
It generates NADPH which is required for the biosynthesis of fatty acids, cholesterol, steroid hormones and neurotransmitters.
What is the difference between glycolysis and glycolytic pathway?
Glycolysis is the sequence of enzymatic reactions which oxidize the six-carbon sugar glucose into two three-carbon compounds with the production of a small amount of adenosine triphosphate (ATP). The glycolytic pathway operates in both the presence (aerobic) and absence of oxygen (anaerobic). …
What is glycolysis explain glycolytic pathway?
Glycolysis refers to a metabolic pathway by which organisms extract energy in the form of ATP during the conversion of glucose into pyruvate and lactate. Glycolysis produces ATP required for energy-requiring reactions and processes, for example, ion transport, protein synthesis and reactions catalysed by kinases.
What should I know about the pentose phosphate pathway?
Oxidative Phase. Step-1: First,six glucose 6-phosphate molecules will oxidize into 6-phosphoglucolactone in the presence of six coenzyme NADP molecules.
When does pentose phosphate pathway take place?
Generally, the Pentose Phosphate Pathway may be viewed as a pathway that branches off from glycolysis. During glycolysis, glucose, a 6-carbon molecule, is converted into glucose-6-phosphate by the addition of a phosphate group. This occurs through a process known as phosphorylation.
What is the rate-limiting step for pentose phosphate pathway?
Okay, to launch the oxidative phase, an enzyme called glucose-6-phosphate dehydrogenase, or G6PD, snatches a hydrogen from glucose-6-phosphate, and offers it to NADP+, making 6-phosphogluconate and NADPH in the process. This is the rate-limiting step of the pentose phosphate pathway.