active transport

Question 1

what does the net mean?

Answer 1

net means the overall

Question 2

what is a concentration gradient?

Answer 2

a cell membrane with a high concentration of particles and a cell membrane with a low concentration of particles on the other side

Question 3

what does active transport do

Answer 3

active transport moves substances from a more dilute solution to a more concentrated solution (against the concentration gradient)

Question 4

what does active transport require to take place?

Answer 4

energy from respiration

Question 5

name a difference between active transport and diffusion regarding molecules

Answer 5

in diffusion, particles move down the concentration gradient

in active transport, particles move against the concentration gradient

Question 6

name a difference between diffusion and active transport regarding energy

Answer 6

in diffusion, energy from respiration is not required

in active transport, energy from respiration is required

Question 7

what is the cavity of the small intestine where food is digested called?

Answer 7

the lumen

Question 8

what can we find in the lumen?

Answer 8

in the lumen we find the molecules produced when foods digested

Question 9

what are a example of the molecules produced when food is digested?

Answer 9

sugars such as glucose

Question 10

are the concentration of the molecules produced (sugar etc.) in the cell, higher or lower than the molecules in the lumen?
can the molecules inside the lumen diffuse into the cell?

Answer 10

higher, the molecules in the lumen are lower meaning they can’t diffuse into the cell.

Question 11

why can’t the molecules in the lumen diffuse into the cell?(diffusion)

Answer 11

they are at a much lower concentration than the molecules inside the cell.

Question 12

how are the molecules in the lumen carried into the cell?

explain.

Answer 12

active transport

active transport goes AGAINST the concentration gradient

Question 13

once all molecules produced are transported inside the cell, they can now be transported where?

Answer 13

into the bloodstream

Question 14

what does the mitochondria inside the cell provide that is needed for active transport?

Answer 14

energy

Question 15

ions in the soil of the diagram shown are at a lower concentration of the ions in the root hair cell, how are the ions transported into the root hair cell?

Answer 15

by active transport?

Question 16

the soil has ions such as magnesium that the root hair cell needs, why might plants need magnesium?

Answer 16

to make chlorophyll in the leaves

Question 17

ions that have been actively transported from the soil into the root hair cells are then transported where ?

Answer 17

into the xylem vessels and moved to the leaf