UNIT 2- bioelements

Question 1

what are the PRIMARY ELEMENTS that account for up to 99% of organic matter?

Answer 1

CHON

Question 2

What are the Bulk elements?

Answer 2

structural elements Required in diet in quantities daily.

C,H,O,N,P,S, K,Cl, Ca, Na, H

Question 3

what are Trace elements?

Answer 3

requirements in humans of few milligrams per day of Fe, Cu Zn

Question 4

what are the PRIMARY BIOELEMENTS that account for 99% of cellular mass.

Answer 4

C,H,O,N,P,S

Question 5

what are the SECONDARY BIOELEMENTS that appear in all living organisms and are essentials?

Answer 5

Mg,Na,K,Ca,Cl

Question 6

what are BIOELEMENTS?

Answer 6

Chemical elements present in living organisms

Question 7

what are OLIGOELEMENTS?

Answer 7

account for less than 0.1%, essentials for life. Low levels =Pathology
Cu, Zn, Fe, F

Question 8

characteristics of bioelements?

Answer 8

-Low atomic mass
-High chemical affinity (tendency to form chemical bonds)
Different electronegativity: generate polar molecules