Methylation Cycle

Question 1

what activates the enzyme Methionine Synthase

Answer 1

B12

Question 2

Methionine->homocysteine

Answer 2

demethylation

Question 3

homocystein-> methionine

Answer 3

methylation

Question 4

what does B12 give to homocysteine

Answer 4

methyl group

Question 5

what does a B9 deficiency affect

Answer 5

B12 and vice versa

Question 6

B12 deficiency causes which anemia

Answer 6

pernicious (lacking intrinsic factor)

megaloblastic (vegetarian)

Question 7

what happens if you are deficient in b-vitamins during remethylation cycle

Answer 7

you will create a methionine deficiency