3 A seedling is placed, with its roots, in a solution containing potassium ions and lett for 48 hours.
The relative concentrations of the potassium ions are shown in the table
concentration of
potassium ions in
the solution
concentration of
potassium ions in
the root har
20
15
start of experiment
after 48 hours
18
35
How did the potassium ions enter the cell?
active
transport
diffusion
Osmosis
A
X
key
B
- yes
Xno
С
D
X

Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.

Select the word from the list that best fits the definition a system made of 25 satellites

Which of the following types of stars is most likely to end up as a supernova? in graph a, the curve peaks at 800 nm, in the red section of the visible light spectrum. in graph b, the curve peaks at 550 nm, in the green section of the visible light spectrum. in graph c, the curve peaks at 450 nm, in the blue section of the visible light spectrum. in graph d, the curve peaks at 300 nm, in the violet section of the visible light spectrum. a b c d