TECHNOLOGY FOCUS - BIOLOGY - Preferred Components: The acetate is produced as a byproduct of biomass processing. The alcohol comprises ethanol and/or isopropanol. The second engineered metabolic pathway to produce an electron donor is a xylose fermentation pathway and comprises upregulation of the native and/or heterologous enzymes xylose reductase (XR) and xylitol dehydrogenase (XDH). The native and/or heterologous XDH enzyme(s) is/are Scheffersomyces stipitis, and is/are optionally encoded by a xyl2 polynucleotide. The native and/or heterologous XR enzyme(s) is/are Scheffersomyces stipitis, Neurospora crassa, or Candida boidinii, and is/are optionally encoded by a xyl1 polynucleotide or an aldolase reductase. The first and second engineered metabolic pathways result in ATP production. The first engineered metabolic pathway comprises: activating or upregulating one or more heterologous enzymes comprising acetyl-CoA acetyltransferase (thiolase), acetoacetyl-CoA transferase, acetoacetate decarboxylase, and/or a secondary alcohol dehydrogenase; activating or upregulating a heterologous ADP-producing acetyl-CoA synthase enzyme; and activating or upregulating the acetate kinase/phosphotransacetylase (AK/PTA) couple. The second engineered metabolic pathway comprises: activation or upregulation of the native enzyme glucose-6-P dehydrogenase of the oxidative branch of the pentose phosphate pathway (PPP); and downregulation of the native enzyme glucose-6-P isomerase that competes with the oxidative branch of the PPP. The native glucose-6-P dehydrogenase enzyme is Saccharomyces cerevisiae, and is optionally encoded by a zwf1 polynucleotide. The recombinant microorganism further comprises: altering the expression of transcription factors that regulate expression of enzymes of the pentose phosphate pathway (PPP); upregulating native enzymes that degrade formaldehyde or formate; and upregulating native and/or heterologous enzymes that produce dihydroxyacetone, and optionally are enzymes comprising glycerol dehydrogenase, and/or dihydroxyacetone phosphatase. The transcription factor is Stb5p, and optionally Saccharomyces cerevisiae. The native glucose-6-P isomerase enzyme is Saccharomyces cerevisiae, and is optionally encoded by a pgi1 polynucleotide. The second engineered metabolic pathway to produce an electron donor comprises: the ribulose-monophosphate pathway (RuMP) that converts fructose-6-P to ribulose-5-P and formaldehyde, where the RuMP pathway comprises upregulating a heterologous enzyme comprising 6-phospho-3-hexuloisomerase, and/or 3-hexulose-6-phosphate synthase; the dihydroxyacetone (DHA) pathway that interconverts dihydroxyacetone and glyceraldehyde-3-P into xylose-5-P and formaldehyde; and downregulating a native dihydroxyacetone kinase enzyme encoded by a polynucleotide comprising dak1, and/or dak2. The formaldehyde degrading enzymes are formaldehyde dehydrogenase and S-formylglutathione hydrolase. The formate degrading enzyme is formate dehydrogenase. The DHA pathway comprises upregulating the heterologous enzyme formaldehyde transketolase (EC 2.2.1.3). The native and/or heterologous glycerol dehydrogenase(s) is/are a microorganism comprising Hansenula polymorpha, E. coli, Pichia angusta, and Saccharomyces cerevisiae, and optionally are encoded by a polynucleotide comprising gdh, gldA, and gcy1. The formaldehyde is oxidized to form carbon dioxide. The microorganism further comprises: overexpression of a glycerol/proton-symporter, and is optionally encoded by a stl1 polynucleotide; overexpression of a native and/or heterologous transhydrogenase enzyme that catalyzes the interconversion of NADPH and NAD to NADP and NADH, and is optionally a microorganism comprising Escherichia coli and Azotobacter vinelandii; and overexpression of a native and/or heterologous glutamate dehydrogenase enzyme, and is optionally encoded by a gdh2 polynucleotide. The engineered metabolic pathways comprise (a) conversion of acetate to acetyl-CoA and (b) conversion of acetyl-CoA to ethanol. The downregulated native enzymes are encoded by a gpd1 polynucleotide and/or gpd2 polynucleotide. The acetyl-CoA is: converted to acetaldehyde by an acetaldehyde dehydrogenase, where the acetaldehyde is converted to ethanol by an alcohol dehydrogenase; and converted to ethanol by a bifunctional acetaldehyde/alcohol dehydrogenase, and is optionally E. coli, C. acetobutylicum, T. saccharolyticum, C. thermocellum, or C. phytofermentans. The acetaldehyde dehydrogenase is an NADPH-specific acetaldehyde dehydrogenase, and is optionally T. pseudethanolicus adhB. The alcohol dehydrogenase is an NADPH-specific alcohol dehydrogenase, and is optionally a microorganism comprising T. pseudethanolicus, C. beijerinckii, Entamoeba histolytica, Cucumis melo, and S. cerevisiae. Preferred Process: The process reduces or removes acetate from the consolidated bioprocessing (CBP) media. The method for increasing acetate uptake further comprises increasing the amount of sugars of the biomass, and optionally where the sugars are increased by the addition of an exogenous sugar source to the biomass or are increased by the addition of one or more enzymes that use or break-down cellulose, hemicellulose and/or other biomass components. The sugars are increased by the addition of a CBP microorganism that uses or breaks-down cellulose, hemicellulose and/or other biomass components.    TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preparation: No preparation method is given. EXAMPLE - No suitable example given.