Chemistry and its application to the human body

Question 1

Irons roll

Answer 1

Needed in RBC to form haemoglobin
-Haemoglobin carries oxygen to all the body tissues for activitys
Hae: carries Co2 from tissue to the lungs

Question 2

Safe range of Iron

Answer 2

18/mg/day for women

Question 3

Examples of influences that affect Iron absorption

Answer 3

Phytate(bran, maize, rice and nuts)

Question 4

State trace chemicals/ minerals relevant in NZ

Answer 4

ZInc, Iron, Selenium, Iodine, fluoride

Question 5

Zincs roll?

Answer 5

helps maintain structural integrity of proteins in the genome/ cell signaling

Question 6

Safe range of Zinc

Answer 6

below 50 mg per day

Question 7

Lack of zinc leads to what?

Answer 7

Delayed puberty, Diarrhoea, Alopecia

Question 8

Selenium

Answer 8

Important production of thyroid hormone,

Inhibit HIV progression to aids

Question 9

Selenium safe range

Answer 9

70 microgram/ per day adult males

60 microgram per day adult women

Question 10

Selenium deficiency

Answer 10

neurological disorders
male infertility
Increased viral infections
prostate cancer

Question 11

Iodine

Answer 11

Important for thyroid hormones

Regulating the metabolism

Question 12

Iodine safety range

Answer 12

Men women 150 micrograms/ day

Question 13

Iodine defiency causes

Answer 13

Goitre

Question 14

Fluorides safety range

Answer 14

4.0 mg of fluoride per person

Question 15

Fluorides benefits

Answer 15

Healthy teeth

Question 16

Fluorides affects

Answer 16

Dental fluorosis (stain/piting of teeth)
Skeletal flurosis: accumulation of fluoride bone as period of exposure increases.
non skeletal flurosis: pain in stomach, loss of appetite

Question 17

What are physical signs lack of selenium

Answer 17

Garlic brath/ frail nails/ hair loss