CatabolicCellular Respiration is a catabolic metabolic pathway.
CO2 is a simple molecule that is a raw material for biosynthesis (anabolism) of complex organic molecules. Biosynthesis requires the input of electrons for reduction of the carbon, as well as energy to drive the endothermic reactions:
Which of these pathways is mainly anabolic?
PETERSON/ECHS Describe the light reactions of photosynthesis and, for both a C3 and a C4 plant, trace the path of a carbon dioxide molecule from the point at which it enters a plant to its incorporation into a glucose molecule.
Photosynthesis is the conversion of light energy intochemicalenergy that can be used in the formation of cellular material from CO2.Photosynthesis is a type of metabolism separable into a catabolic andanaboliccomponent. The catabolic component of photosynthesis is the lightreaction,wherein light energy is transformed into electrical energy, thenchemicalenergy. The anabolic component involves the fixation of CO2and its use as a carbon source for growth, usually called the darkreaction.In photosynthetic procaryotes there are two types of photosynthesis andtwo types of CO2 fixation.
Photosynthesis and Anabolism - Cornell University
The inner chloroplast membrane have a specific antiporter thatcatalyzes the one-for-one exchange of Pi with a triosephosphate, either dihydroxyacetone phosphate or 3-phosphoglycerate (Fig. 18–7).This antiporter simultaneously moves Pi into the chloroplast, where it is usedin photophosphorylation, and moves triose phosphate into the cytosol, where itcan be used to synthesize sucrose, the form in which the fixed carbon istransported to distant plant tissues. Sucrose synthesis in the cytosol andstarch synthesis in the chloroplast are the major pathways by which the excesstriose phosphate from photosynthesis is “harvested.” Sucrose synthesis releasesfour Pi molecules from the four triose phosphates requiredfor its production. For every molecule of triosephosphate removed from the chloroplast, one Pi is transportedinto the chloroplast, providing the ninth Pi mentionedabove, to be used in regenerating ATP. If this exchangewere blocked, triose phosphate synthesis wouldquickly deplete the available Pi in the chloroplast, slowingATP synthesis and suppressing assimilation of CO2into starch.
Why is photosynthesis anabolic? | Yahoo Answers
Anabolism and catabolism Pathways
Anabolism is the synthesis of complex molecules from precursors. This includes synthesis of proteins, carbohydrates, nucleic acids and lipids, usually from their building block monomers. Catabolism is the breakdown of complex molecules into smaller precursors from which they are synthesized. It is a reversed process of anabolism. When cells have excess resources such as food and extra energy, anabolism occurs to store unused nutrients for later use. When cells are deficient for food or energy, catabolism occurs to break down the stored nutrients for the body to use.
Metabolism/Photosynthesis Flashcards | Quizlet
What is metabolism?
All living things must have an unceasing supply of energy and matter. The transformation of this energy and matter within the body is called metabolism. Metabolism includes two different types: catabolism and anabolism. Catabolism is destructive metabolism. Typically, in catabolism, larger organic molecules are broken down into smaller constituents. This usually occurs with the release of energy. Anabolism is constructive metabolism. Typically, in anabolism, small precursor molecules are assembled into larger organic molecules. This always requires the input of energy.
Question 6 Which of the following is an anabolic pathway
ANABOLIC PATHWAYS INITIATED BY THIS ENZYME ALSO SUPPLY AMMONIATO THE CELL WHEN NO3- IS USED AS A NITROGEN SOURCE DURING NITROGEN ASSIMILATION.nitrogenase, THE ENZYME COMPLEX THAT CARRIES OUT THE N2 REDUCTIONIN N2 FIXATIONnitrogen fixation REDUCTION OF N2 BY NITROGENASE TO FORM NH3 FORBIOSYNTHESIS.