PHOSPHORUS CYCLE

Question 1

the primary
nonliving sources of phosphorus

Answer 1

rocks, water, soil, sediments

Question 2

major living sources of phosphorus

Answer 2

plants and animals

Question 3

central role in cell metabolism?

Answer 3

contained in energy transferring molecules

amp - c10h14n5o7p
adp - c10h15n5o10p2
atp - c10h16n5013p3

c - remains at 10
h - increases by 1
n - remains at 5
o - increases by 3
p - increases by 1

Question 4

what are amp, adp and atp? their use?

Answer 4

adenosine monophosphate, diphosphate, triphosphate

energy carrying substances

Question 5

phosphorus role in cell production?

Answer 5

major component of dna and rna

Question 6

purpose of dna and rna?

Answer 6

contain and transfer genetic code

Question 7

what does dna and rna stand for?

Answer 7

Deoxyribonucleic acid (DNA)
Ribonucleic acid (RNA)

Question 8

steps in phosphorus cycle?

Answer 8

weathering
mineralization by plants
assimilation by animals
decomposition by microorganisms
geological uplift by tectonic movements

Weather Made As buy DecolGen

Question 9

excessive growth of algae, thus lowering the dissolved
oxygen level in the water bodies, resulting in severe loss of
aquatic lives

Answer 9

eutrophication

Question 10

phosphorus is a ________ factor due to its limited amount.

Answer 10

limiting factor

Question 11

deforestation results to?

Answer 11

the phosphorus content to be eroded and reduced

disable natural replenishment of phosphorus

Question 12

a slow process and does not include any gaseous phase

Answer 12

phosphorus cycle

Question 13

importance of phosphorus cycle?

Answer 13

1. DNA & RNA
2. BONE
3. CELL MEMBRANE, PHOSPHOLIPIDS
4. INSECT EXOSKELETON
5. BUFFERING AGENTS

Question 14

How do humans affect the
phosphorus cycle?

Answer 14

*Using of phosphate-containing fertilizers
*Cutting down of tropical rainforests
*Leaching of phosphorus from households and
industries into water bodies