Question

2. Vitamin B12 contains the element
(a) Fe
(b) Co
3. The role of Ca2+ ions in the human body is to
(c) Ca2+
(d) Mg2+​

Answer 1

Answer:

2. Vitamin B12 contains the element

(a) Fe

3. The role of Ca2+ ions in the human body is to

(d) Mg2+

Explanation:

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Answer 2

Answer:

d) Mg2+

Explanation:

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