Chapter 10: Micromineral (Manganese)

Question 1

cofactor for a number of enzymes involved in urea, cholesterol fatty acid biosynthesis, and in cho, chon, and energy metabolism

*cofactor action is not specific

Answer 1

manganese

Question 2

body contains _____ concentrated Mn in the liver, pancreas, skin, muscles, bones

Answer 2

29 mg

Question 3

manganese - functions

1. required by mitochondrial superoxide dismutase, catalyzes the conversion of superoxide to _____

the HOOH formed by superoxide is decomposed by catalse

Answer 3

hydrogen peroxide

Question 4

manganese - functions

2. as a cofactor, it is involved in _____ and _____ metabolism

Answer 4

glucose and fatty acid

Question 5

manganese - functions

3. needed in utilization of

Answer 5

thiamin

Question 6

manganese - functions

4. needed in the release of _____ from the liver

Answer 6

lipid

Question 7

manganese - functions

5. _____ synthesis

Answer 7

urea

Question 8

manganese - functions

6. amino acid interconversion

Answer 8

-

Question 9

manganese - functions

required for the normal development of _____ and _____

Answer 9

skeleton and connective tissues

Question 10

manganese - absorption and metabolism

catabolism by _____

Answer 10

manganese-binding protein transferrin

Question 11

manganese - absorption and metabolism

primary route of excretion

Answer 11

bile

Question 12

manganese - absorption and metabolism

99% of the body’s losses of Mn are

Answer 12

fecal

Question 13

manganese - interrelationship with other nutrients

Mn absorption decreased with high intakes of _____

Answer 13

fe or iron

Question 14

manganese - interrelationship with other nutrients

_____ and _____ may affect bioavailabity of Mn

Answer 14

calcium and zinc

Question 15

manganese - deficiency

does not usually develop unless the mineral is deliberately eliminated in the diet

Answer 15

-

Question 16

manganese - deficiency

high _____ and _____ may prevent Mg absoprtion

Answer 16

iron and calcium

Question 17

manganese - toxicity

causes extreme weakness, apathy, anorexia, and fatigue

Answer 17

exposure to dust-containing manganese

Question 18

manganese - food source

Answer 18

whole grain cereals, nuts, legumes, tea, and green leafy vegetables