Post Midterm

Question 1

What nutrients are necessary for chlorophyll production

Answer 1

Iron (Fe) and manganese (Mn)
Deficiency causes interveinal chlorosis (yellowing)

Question 2

Iron (Fe)

Answer 2

Abundant, important and largely insoluble and largely oxidized

Question 3

Fe(II) or Fe2+ Ferrous ion

Answer 3

Soluble

Question 4

Fe(III) or Fe3+ Ferric ion

Answer 4

Insoluble

Question 5

Interveinal chlorosis

Answer 5

The characteristic symptom of iron deficiency

Question 6

What is Chelation

Answer 6

the formation of bonds between two or more separate binding sites within a ligand and a single central atom

Question 7

Organic acid (Citrate) binds to Fe

Answer 7

Fe solubilization in soil
to maintain an accessible pool of Fe

Question 8

Plant root exudate and microbial exudate

Answer 8

increasing Pi availability

Question 9

Rhizosphere

Answer 9

soil area around the plant root

Question 10

TOM1

Answer 10

Efflux transporter of mugineic acid
Used in iron uptake

Question 11

YS/YSL

Answer 11

Fe(III) deoxymugineic acid transporter (yellow strips/YS-like)
used in iron uptake

Question 12

yellow-stripe1 mutant

Answer 12

was identified from maize
is a lack of chlorophyll
in the 1950s and 1960s this phenotype is caused by iron deficiency

Question 13

Siderophores

Answer 13

small metal-binding molecules
generated from bacteria

Question 14

Phytosiderophores

Answer 14

generated from plants

Question 15

Silicone

Answer 15

is beneficial to plants, especially under stress conditions

Question 16

Iron uptake

Answer 16

Strategy I (dicots)
Strategy II (monocots)

Question 17

So many transport systems operate across membranes

Answer 17

Sympoter
Antiporter
Channels
H+ pump
ABC transporter

Question 18

Schematic of Flux (J) crossing biological membrane

Answer 18

diffusion

Question 19

Diffusion

Answer 19

movement of individual molecules of a substance through a from an area of higher concentration to an area of lower concentration

Question 20

Chemical potential

Answer 20

The sum of the concentration, electrical and hydrostatic potentials (under standard conditions)

Question 21

Facilitated diffusion

Answer 21

involved in the movement of specific molecule
needs specific channels or carrier proteins
needs no ATP energy for its transport

Question 22

Facilitated diffusion of “i”

Answer 22

“i” interacts with a “molecule” in the membrane to permit its passive diffusion down its chemical potential gradient

Question 23

Limited numbers of membrane transporters

Answer 23

Membrane proteins are saturated at the high concentration

Question 24

Glucose Permease

Answer 24

Glucose transporter

Question 25

Plastid glucose transporter

Answer 25

locates in chloroplast inner envelope

Question 26

Triose-phosphate/phosphate translocator (TPT)

Answer 26

mediates a passive counter-exchange of Pi and Triose phosphate