Plants

Question 1

What is Movements of Sap across the plant called and how does it happen

Answer 1

Translocation by sieve tube elements

Question 2

How do sieve tubes work

Answer 2

They have companion cells that help move it by atp from Mitochondria.

Question 3

Difference of transpiration stream and translocation

Answer 3

Transpiration moves water, Translocation moves Sucrose and other substances like amino acids
Transpire moves up
Translocation moves up and down boi
Translocation uses atp
Transpiration does not

Question 4

Structure of sieve tube elements

Answer 4

They have no nuclei and little cytoplasm to facilitate more sap but they are still alive

Question 5

What are sieve plates

Answer 5

Connection sites between sieve elements , allowing certain sizes through

Question 6

What is a plasmodesmata

Answer 6

Much like a Nuclear pore but for the Cell

Question 7

Describe active loading

Answer 7

The loading of sucrose into the sieve tube elements.

Question 8

How does active loading work?

Answer 8

Hydrogen Ions are pumped out of the companion cells by using ATP (carrier proteins) and then when concentration gradient is created.
They diffuse back in using co-transporter Proteins that diffuse sucrose with the hydrogen ions
High concentration of sucrose in Companion cells diffuse into Sieve Tube Elementsa