The enzyme that catalyzes the condensation of acetyl-CoA with oxaloacetate is _______ _.
The enzyme that catalyzes the condensation of acetyl-CoA with oxaloacetate is _______ _.
Topoisomerase II catalyzes the transient breaking and rejoining of two strands of duplex DNA which allows the strands to pass through one another, thus altering the topology of DNA.
Topoisomerase II catalyzes the transient breaking and rejoining of two strands of duplex DNA which allows the strands to pass through one another, thus altering the topology of DNA.
Amplification results when an enzyme associated with a signal receptor is activated and, in turn, catalyzes the activation of many molecules of a second enzyme, each of which activates many molecules of a third enzyme, and so on, in a so-called _____________________.
Amplification results when an enzyme associated with a signal receptor is activated and, in turn, catalyzes the activation of many molecules of a second enzyme, each of which activates many molecules of a third enzyme, and so on, in a so-called _____________________.
E2 (dihydrolipoamide acetyltransferase or dihydrolipoyl transacetylase, DLAT) of the pyruvate dehydrogenase complex catalyzes a __________________ in which the —SH group of CoA replaces the —SH group of E2 to yield acetyl-CoA and the fully reduced (dithiol) form of the lipoyl group.
E2 (dihydrolipoamide acetyltransferase or dihydrolipoyl transacetylase, DLAT) of the pyruvate dehydrogenase complex catalyzes a __________________ in which the —SH group of CoA replaces the —SH group of E2 to yield acetyl-CoA and the fully reduced (dithiol) form of the lipoyl group.
SOD is one of the body’s primary defense mechanisms against oxidative stress. The enzyme catalyzes which one of the following reactions A: O2− + e− + 2H+ → H2O2 B: 2O2− + 2H+ → H2O2 + O2 C: O2− + HO• + H+ → CO2 + H2O D: H2O2 + O2 → 4H2O E: O2− + H2O2 + H+ → 2H2O + O2
SOD is one of the body’s primary defense mechanisms against oxidative stress. The enzyme catalyzes which one of the following reactions A: O2− + e− + 2H+ → H2O2 B: 2O2− + 2H+ → H2O2 + O2 C: O2− + HO• + H+ → CO2 + H2O D: H2O2 + O2 → 4H2O E: O2− + H2O2 + H+ → 2H2O + O2
以下关于翻译，哪些说法是错误的? (Which of the following statements about translation is false ?) A: 整个过程都需要蛋白质因子的参与 (The whole process requires the participation of protein factors) B: 起始因子负责核糖体小亚基与mRNA的结合 (Initiation factors are responsible for binding ribosomal subunits to mRNA) C: 核糖体RNA可催化肽键形成 (Ribosomal RNA can catalyzes the formation of peptide bond) D: 一类特殊的tRNA可以识别终止密码子 (A special class of tRNA can recognize termination codon)
以下关于翻译，哪些说法是错误的? (Which of the following statements about translation is false ?) A: 整个过程都需要蛋白质因子的参与 (The whole process requires the participation of protein factors) B: 起始因子负责核糖体小亚基与mRNA的结合 (Initiation factors are responsible for binding ribosomal subunits to mRNA) C: 核糖体RNA可催化肽键形成 (Ribosomal RNA can catalyzes the formation of peptide bond) D: 一类特殊的tRNA可以识别终止密码子 (A special class of tRNA can recognize termination codon)