8. What are the vitamins
which makeup the B
complex? Which problems
does the lack of these
vitamins cause?

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Vitamins of the complex are: thiamin,
vitamin B1; riboflavin, vitamin B2,
and (B3), essential for
constitution of the acceptors
FAD, NAD NADP of the
metabolism; pyridoxine, or ; and
cyanocobalamin, or B12.

Deficiency of B1 causes beriberi,
of appetite and . The lack of
B2 causes mucosal in
the mouth, and lips. Deficiency
niacin causes nervousness,
disturbances, loss of and
pellagra. Lack vitamin B6 causes
lesions, irritation and .

Vitamin B12 acts with folic acid
its deficiency causes division
disruptions leading pernicious anemia
(a of megaloblastic and
deficiency anemia).

The of vitamin B12
on another substance the intrinsic
factor by the gastric .