SOLUTE TRANSPORT

Question 1

Guard cells

Answer 1

K+, malate, sucrose
responds to blue light

Question 2

Stomata

Answer 2

open- turgid
closed- flaccid

Question 3

Guard cell opening

Answer 3

lower solute potential
decrease water potential
water uptake
stomata open

Question 4

Guard cell closing

Answer 4

solute potential increases
water potential increases
water loss
stomata closed

Question 5

Ficks first law

Answer 5

diffusion
movement of molecules or atoms from a region of high concentration to low concentration

Question 6

Chemical potential

Answer 6

the sum of the concentration, electrical and hydrostatic pressure

Question 7

Simple diffusion

Answer 7

without transporter

Question 8

Facilitated diffusion

Answer 8

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

Question 9

glucose permease

Answer 9

glucose transporter
chloroplast inner envelope

Question 10

TPT

Answer 10

passive counter-exchange of Pi or triose phosphate

Question 11

electric field

Answer 11

balances the concentration gradient in activity of “i”

Question 12

active transport

Answer 12

ATPase, symporter (same) and antiporter (different)
H+ pumping ATPase (blue light)

Question 13

influx/efflux

Answer 13

0. 1 -200 (active)
   1 0. -50 (active)
1. 0 -300 (passive)

Question 14

passive vs active

Answer 14

low affinity K+ transporter (channel/passive)
high affinity k+ transporter (symporter/active)

Question 15

non–reducing sugars

Answer 15

transported via phloem
sucrose

Question 16

pigments

Answer 16

etioplast- no chlorphyll
proplastid- undifferentiated, colourless
amyloplast- starch storage

Question 17

conversion from etioplast to chloroplast

Answer 17

light induces conversion
400-700 nm

Question 18

Sink

Answer 18

non-photosynthetic developing
organ or an organ that does not produce
enough photosynthate
solute potential high, low turgor pressure

Question 19

Source

Answer 19

Exporting plant tissues or organs
that produces photosynthate (e.g. sugars)–
mature and photosynthetically active leave
solute potential low, high turgor pressure

Question 20

mature sieve elements

Answer 20

no nucleus

Question 21

sieve tube

Answer 21

functional units for long distance translocation

Question 22

Source-sink transition leaf

Answer 22

mature and immature parts
leaf base: source
leaf tip: sink