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2 years ago

Which two cellular organelles in eukaryotes have both electron transport systems and chemiosmotic mechanisms?

Biology

1 answer:

aalyn [17]2 years ago

7 0

Answer:

Mitochondria and the chloroplast

Explanation:

Electron transport refers to the transfer of of electrons from electron donors to electron acceptors via a reduction-oxidation reaction.

In the mitochondria the process is called Oxidative phosphorylation whereas in the Chloroplast it is called Photo-phosphorylation since it utilizes light.

Chemiosmotic mechanisms allow the movement of ions across a semi-permeable membrane down their electrochemical gradient.

In both mitochondria and chloroplast,have these mechanisms for the production of ATP .

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1. charophytes

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2 years ago

A student placed a semipermeable membrane inside a U-shaped channel with two chambers, as shown. The

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Placing salty water in A and distilled water in B.

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A cell is in a equilibrium with its surrounding at 30 degrees Celsius. The molarity of surrounding sucrose solution is 0.5m. Cal

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Solute potential of a solution is calculated using the formula,

Ψ $_{s}=-(iCRT)$

Where,

Ψ $_{s}$ is the solute potential of the solution,

<em>i</em> is the degree to which the solute ionizes(ionization constant) in solution = 1, as sucrose is a nonelectrolyte.

C is the concentration of the solution in molarity = 0.5 M

R is the gas constant or the pressure constant = 0.0831 L.bar/(mol.K)

T is the temperature in Kelvin scale = $30^{0}+273 =303 K$

Calculating the solute potential of the surrounding sucrose solution:

Ψ $_{s}=-(iCRT)$

= -(1 * 0.5 M * (0.0831 L.bar/(mol.K))* 303 K)

= 12.6 bar

Therefore, the solute potential of the surrounding solution is 12.6 bar

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2 years ago