Active Transport

Question 1

what is active transport

Answer 1

the movement of substances from a more dilute solution to a more concentrated solution (against the concentration gradient) using energy

Question 2

where do cells get energy for active transport

Answer 2

respiration

Question 3

how is active transport used in the body

Answer 3

• concentration of sugars in the lumen (cavity of the small intestine where foods are digested) is lower than the concentration of sugars inside the cells
• sugars cannot diffuse into cell
• instead sugars are carried in by active transport
• once inside the cell the sugars can then be transported into the blood and carried around the body

Question 4

how are cells that carry out active transport adpated

Answer 4

have lots of mitochondria for respiration to provide energy

Question 5

how is active transport used in plants

Answer 5

• root hair cells transport ions such as magneisum into the plant from the soil
• plants need magneisum to make chlorophyll in the leaves
  -he concentration of ions in the soil is lower than the concentration inside the root hair cell so active transports used to move the ions into the cell
• these ions are then transported to the xylem vessels and moved through the leaf