24小时热门版块排行榜

返回列表

zhujian1985

铁虫 (初入文坛)

应助: 0 (幼儿园)
金币: 42
帖子: 3
在线: 19分钟
虫号: 491398
注册: 2008-01-06
专业: 制浆造纸

[交流] 【求助】求助生物专业人士帮做英文生物题目已有1人参与

我是化学类专业的学生，老师帮我们搞了个国际的远程生物硕士，生物类的题目确实不知道怎么做，求助！望好心人帮我解答
1What are legislation and control of natural flavours authenticity of vanilla? Justify your answer by describing two techniques or methods which were developed for checking the origin of vanillin.

2 describe the enzymatic mechanisms of the “dissimilative” reduction of sulphate in bacteria.

3 what are the main physical properties of phenols and their derivatives(be carefull: not acid-base or nucleophilic properties).

4 develop two examples of applications of aromatic compounds in the field of biotechnological agribusiness beverages(tea ,beer , wine,…….)or cosmetics (be carefull: not using olives and not in the field of nutrients & health ).give your own arguments “in favour of ”and “against” these kind of compounds for the human society.
5计算题
A fungal strain growing on glucose produces citric acid (C6H8O7).the average composition of fungal biomass is C:47%,H:6.9%,O:2.19%,N:0.57%. the biomass yield is 0.09g/g and the citric acid yield is 0.86g/g versus glucose.
What are the oxygen uptake rate and CO2 production rate when the growth rate is 0.4/h and the biomass 9g/L?

回复此楼