The cardiovascular system I think. Hope this helps
Answer:
Pressure, P = 28.2 kPa
Explanation:
Given that,
Number of moles, n = 0.54 mol
Volume of ideal gas, V = 35.5 L
Temperature, T = 223 K
We need to find the pressure of ideal gas. The equation of ideal gas is given by :

R is gas constant
P is pressure

So, the pressure of the gas is 28.2 kPa.
I cannot found the images of the microscopy anywhere. But I can explain how you can differentiate a procaryote from a eucaryote under a microscope.
The first difference between them is the size of the cell. eucaryotes are generally much bigger than procaryotes. Procaryotes are visible only at x100 objective, but eucaryotes are visible starting from the x10 zoom.
The second difference is the presence of a nucleus in eukaryotes and the absence of it in procaryotes.
The third difference is the presence of organelles in eukaryotes and the presence of a cell wall in procaryotes (only visible at electronic microscopy).