This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
Which micronutrient deficiency causes anemia? 
Select and explain. 
A. Copper, B. Molybdenum, C. Selenium, D. Flurine
A: Copper
Answer: A: Copper 
Explanation: Ans. is 'a' i.e., CopperCopper containing protein ceruloplasmin is necessary for transpo of iron in the Ferric form across membranesCopper is an integral component of ALA synthase, which is necessary for heme synthesisCopper helps in the uptake of iron across normoblasts