2024知到网课 ENVIRONMENTAL BIOTECHNOLOGY智慧树答案

绪论 单元测试

1、多选题：Which of the following saying are correct（）.
A:Quantification analysis makes processes reliable and cost-effective.
B:Empiricism is very important in environmental biotechnology besides the principles of microbiology and engineering.
C:Molecular biology is the substitute for traditional methods in exploring microbial communities.
D:Microbiological treatment technologies developed at the beginning of the 20th century, such as activated sludge and anaerobic digestion, remain mainstays today.
正确答案:【Quantification analysis makes processes reliable and cost-effective.;Empiricism is very important in environmental biotechnology besides the principles of microbiology and engineering.;Microbiological treatment technologies developed at the beginning of the 20th century, such as activated sludge and anaerobic digestion, remain mainstays today.】

第一章 单元测试

1、多选题：The basic reactions involved in bacterial growth, including（）.
A:cell synthesis reactions
B:energy-consuming reactions
C:fermentation reactions
D:energy-producing reactions
正确答案:【cell synthesis reactions;energy-producing reactions】

2、单选题：In microbial metabolism, NO3- and SO42- can be used as electron acceptors in （）.
A:the absence of oxygen
B:the absence of ATP
C:in the presence of cytochromes
D:the absence of enzymes
正确答案:【the absence of oxygen】

3、单选题：fs0+fe0=（）.
A:0.9
B:1
C:1.1
D:2
正确答案:【1】

4、判断题：The amount of donor used for energy production for cells synthesis related to both energy required for cell synthesis and energy released from donor oxidation. ( )
A:对
B:错
正确答案:【对】

5、判断题：The net yield Yn will sometimes equals to true yield Y. ( )
A:错
B:对
正确答案:【错】

第二章 单元测试

1、单选题：Which of the following is the right definition of ‘safety factor’ in engineering? （）
A:θx/θxmin
B:S0/Smin
C:θxmin/θx
D:θx/[θxmin]lim
正确答案:【θx/θxmin】

2、判断题：The decay of active biomass is a first-order function, including the fraction for true respiration and for inert. ( )
A:对
B:错
正确答案:【对】

3、判断题：Solids retention time or sludge age is the reciprocal of the net specific growth rate. ( )
A:错
B:对
正确答案:【对】

4、判断题：UAP is biodegraded considerably faster than is BAP. ( )
A:错
B:对
正确答案:【对】

5、判断题：The true yield cannot be estimated from experiments. ( )
A:对
B:错
正确答案:【错】

第三章 单元测试

1、单选题：The idealized biofilm having the following properties except ( ).
A:The biofilm has a uniform biomass density.
B:An effective diffusion layer of thickness L represents external mass-transport resistance.
C:Has a locally uniform thickness of Lf.
D:Mass-transport resistance is not important to the biofilm.
正确答案:【Mass-transport resistance is not important to the biofilm.】

2、单选题：The following description of the fundamental “law” of the steady-state biofilm is correct. ( )
A:The growth of new biomass per unit area per hour (YJ T) is just balanced by the losses.
B:The growth of new biomass per unit area per hour (YJT) is just balanced by the losses per unit area b’XfLf.
C:The growth of new biomass (YJ) is just balanced by the losses per unit area b’XfLf.
D:The growth of new biomass per unit area (YJ) is just balanced by the losses per unit areab’XfLf.
正确答案:【The growth of new biomass per unit area (YJ) is just balanced by the losses per unit areab’XfLf.】

3、多选题：The model of a steady-state biofilm requires simultaneous solution of ( ).
A:mass-balance for substrate in the biofilm.
B:boundary and continuity conditions.
C:mass-balance for substrate transport to the biofilm.
D:mass-balance for active biomass in the biofilm
正确答案:【mass-balance for substrate in the biofilm.;boundary and continuity conditions.;mass-balance for substrate transport to the biofilm.;mass-balance for active biomass in the biofilm】

4、多选题：The following figures shows that ( ).
A:J andXfLfincreases very sharply as S increases slightly above Smin.
B:For S large enough, J (and XfLf) increases for larger S, because the substrate concentrations inside the biofilm rise in response to a higher S.
C:At some value of S>Smin, the slope of J versus S declines from near infinity and approaches 1.0.
D:For very large S, the slope of J versus S declines gradually and eventually approaches the limiting case of one-half-order kinetics, or J=k1/2S1/2.
正确答案:【J andXfLfincreases very sharply as S increases slightly above Smin.;For S large enough, J (and XfLf) increases for larger S, because the substrate concentrations inside the biofilm rise in response to a higher S.;At some value of S>Smin, the slope of J versus S declines from near infinity and approaches 1.0.;For very large S, the slope of J versus S declines gradually and eventually approaches the limiting case of one-half-order kinetics, or J=k1/2S1/2.】

5、判断题：The result of mass-transport resistance is that the substrate concentrations at any position in the biofilm usually are lower than in the bulk liquid. ( )
A:对
B:错
正确答案:【对】

6、判断题：Two biofilms having the same physical thickness, should have similar values. ( )
A:错
B:对
正确答案:【错】

7、判断题：The fundamental understanding of a steady-state biofilm is that the biomass per unit surface area (XfLf) is constant in time, and the biomass at any one location is at steady state.
A:对
B:错
正确答案:【错】

8、判断题：S*minrepresentsthe growth potential in the steady-state-biofilm model, and S*minmuch less than 1.0 indicates the net positive growth is much greater than the loss. ( )
A:错
B:对
正确答案:【对】

9、判断题：K* compares external mass transport to the maximum utilization rate. K* less than 1 means that the substrate utilization is controlled by external mass transport. ( )
A:错
B:对
正确答案:【对】

10、判断题：For deep biofilm, it has the maximum flux into the biofilm. ( )
A:对
B:错
正确答案:【对】

第四章 单元测试

1、多选题：Which of the following should be balanced in a model? ( )
A:components in mole/L
B:COD
C:elements
D:charges
正确答案:【COD;elements;charges】

2、判断题：Anabolism is related to the rate of substrate uptake by a yield. ( )
A:错
B:对
正确答案:【对】

3、判断题：Nitrite is included in ASM1. ( )
A:错
B:对
正确答案:【错】

4、判断题：Hydrolysis is usually simulated via first order kinetic. ( )
A:对
B:错
正确答案:【对】

5、判断题：Both anoxic and aerobic growth of heterotrophs are considered in ASM1. ( )
A:错
B:对
正确答案:【对】