Translocation

Question 1

what are assimilates?

Answer 1

• products produced by the incorporation of carbon (from CO2) into organic substances during amino acids

Question 2

what is a source?

Answer 2

• releases sucrose into the phloem

Question 3

what is a sink?

Answer 3

• removes sucrose from the phloem

Question 4

examples of sinks:

Answer 4

• tips of the roots and shoots as they can use the sucrose to provide energy to make the new protein and therefore turn sucrose into ATP or glucose to be used for growth

Question 5

what type of process is the movement of sucrose into the phloem?

Answer 5

• active process

Question 6

how do H+ ions diffuse back into the cells?

Answer 6

• by cotransporter proteins bringing sucrose molecules with them

Question 7

moving to the sink:

Answer 7

• sucrose is used by cells surrounding the phloem
  in respiration and stored as starch
• reduces sucrose conc in the cells
• ## sucrose moves into tge cells via diffusion or active transport