Nitrogen, Phosphorus, & HABs

Question 1

Vital for plant growth

Answer 1

N (nitrogen), P (phosphorus), and K (potassium)

Question 2

What is a primary nutrient critical for survival?

Answer 2

Nitrogen; important component of nucleic acids and proteins

Question 3

What is a function of phosphorus?

Answer 3

makes nucleic acids and the phospholipids comprising biological membranes

Question 4

Phospholipid bilayer

Answer 4

two layers of phospholipids that make up the cell or plasma membrane; proteins embedded in lipid bilayer

Question 5

Why do plants need nitrogen?

Answer 5

enables growth, each molecule of chlorophyll contains 4 nitrogen molecules (important for photosynthetic ability)

Question 6

2 most common limiting nutrients

Answer 6

nitrogen and phosphorus

Question 7

Limiting nutrients

Answer 7

the nutrient that’s in shortest supply and limits growth; needed for growth

Question 8

Chemical forms of N and P taken up by environment

Answer 8

Nitrogen gas (N2) from atmosphere
Phosphate (PO43-), dihydrogen phosphate (H2PO42-), and hydrogen phosphate (HPO42-)

Question 9

Which organisms can fix nitrogen?

Answer 9

Humans cannot
Bacteria and Archaea can (both prokaryotes)
Heterocysts (specialized cells of cyanobacteria) can
Some plants (mainly legumes because they have N-fixing bacteria in roots as endosymbionts)
maybe fungi (?)

Question 10

ATP

Answer 10

Adenosine triphosphate (3 phosphate groups); critical energy source for cells, without it we would not be able to function and would die