The invention relates to the strains of e. coli produce vitamin b12 transformed with a heterologous dna comprising all or part of the region cob1 and allowing the expression of said region in e. coli. In particular, the region cob1 is the region of salmonella typhimurium.RAMBACH ALAIN...
Which of the following is not a function of gastric acid? A、kill the bacteria that enter the stomach with the food B、activate pepsinogen C、promote the absorption of vitamin B12 D、an acidic environment helps the small intestine absorb iron and calcium 点击查看答案&解析手机看题 你可能感兴趣...
Which vitamin is involved in the composition of the coenzyme of transaminase? A、Vit B1 B、Vit B2 C、Vit B6 D、Vit B12 E、Vit PP 点击查看答案手机看题 你可能感兴趣的试题 单项选择题 关于美国第二波妇女运动,下列说法错误的是()。 A.开始于20世纪60年代 B.要求女性获得就业权和投票权 C.反思两...
\\ Vitamin B12 \\ Riboflavin \\ Protein \\ Ascorbic acid Which of the following is a macronutrient? a. Vitamin B12 b. Riboflavin c. Protein d. Ascorbic acid Which of the following is not an organic molecule? a) cellulose b) sucrose c) water d) testosteron...
Which of the following pairs are correct? A. Vitamin B12 : Egg and meat B Vitamin K : Tomatoes C Vitamin B2 and B1 : Grains D Iodine : Sea food
The difference between Vitamin B12 and B Complex is thatVitamin B12 is just one of the eight B vitamins that form the B complex. Together, the set of 8 B vitamins that make up the B complex are presented in the optimum balance to provide the recommended daily amount. ...
Vitamin A 750 mcg 100% Thiamin( Vitamin B1 ) 1.2rag 100 % Riboflavin(Vitamin B2) 1.6rag 100 % Niacin(Vitamin B3 ) 1.8 mg 100 % Pantothenic Acid(Vitamin BS) 4.6mg Vitamin B6 ling Vitamin B12 2mcg 100 % Vitamin C 30mg 100 % Vitamin D 2.5mcg 100 % Vitamin E 5r...
Which is the vitamin that can be stored in the liver?Which of the following is required for the absorption of vitamin b12? a. A co-enzyme b. Intrinsic factor c. Vitamin C d. Bile acids e. None of the aboveWhat are the enzymes found in the pancr...
Which vitamin is used occasionally as an antioxidant? Antioxidants from food include not onlyvitamins C and E and beta carotene, but also some elements such as selenium and copper (which form antioxidant metallo-enzymes), and other compounds found in plant foods such as flavonoids and polyphenols...
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