Potassium & Other Nutrients (Quiz 3) Flashcards
1
Q
Potassium =
A
most common ion in plants
2
Q
Potassium sets up
A
membrane potential
3
Q
Potassium is usually not
A
limiting in soil
4
Q
Potassium is important for
A
osmoregulation
5
Q
Potassium regulates
A
stomatal opening
6
Q
Potassium activates
A
enzymes
7
Q
sulfur occurs as
A
sulfate SO4 2-
8
Q
sulfur can be difficult
A
to remove from soil
9
Q
sulfur is important for
A
protein / AA synthesis
10
Q
calcium effects: (2)
A
cell membrane permeability
uptake of other nutrients
11
Q
calcium is also an
A
enzyme cofactor
12
Q
iron occurs as
A
Fe2+ or Fe3+
13
Q
iron is needed for
A
synthesis of chlorophyll & cytochromes (for photosynth & respiration aka ETC/Light Dep Rxns)
14
Q
iron deficiency leads to
A
chlorosis
15
Q
magnesium is the
A
center of the “head” of chlorophyll
16
Q
magnesium is also an…
involved in…
A
enzyme cofactor
involved in activation of Photosynth-RUBUSCO
