You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Biology

Active Transport

The concentra...

Question

The concentration of $K^{+}$ ion inside a biological cell is $20$ times higher than outside. The magnitude of potential difference the two sides is:

0 m V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

26 m V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

77 m V

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

177 m V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $77 m V$
This is a concentration cell,
$E_{c e l l} = \frac{0.059}{1} l o g (\frac{C_{1}}{C_{2}})$
$C_{1} = 20 C_{2}$
$E_{c e l l} = 0.059 l o g (20)$
$E_{c e l l} = 0.0767 V$
$= 76.7 m V$

Suggest Corrections

Similar questions

Q. The concentration of

K^{+}

ion inside a biological cell is

20

times higher than outside. The magnitude of potential difference between the two sides is :

[G i v e n : 2.303 \frac{R T}{F} = 59 m V]

Q. The concentration of potassium ions inside a biological cell is at least twenty times higher than the outside. The resulting potential difference across the cell is important in several processes such as transmission of nerve impulses and maintaining the ion balance. A simple model for such a concentration cell involving a metal M is:

M (s) | M^{+} (a q; 0.05 m o l a r) | | M^{+} (a q)

, 1

m o l a r) | M (s)

For the above electrolytic cell the magnitude of the cell potential

| E_{c e l l} | = 70 m V

For the above cell:

The concentration of potassium ions inside a biological cell is at least twenty times higher than the outside. The resulting potential difference across the cell is important in several processes such as transmission of nerve impulses and maintaining the ion balance. A simple model for such a concentration cell involving a metal M is:
$M (s) | M^{+} (a q; 0.05 m o l a r) | | M^{+} (a q; 1 m o l a r) | M (s)$
For the above electrolytic cell the magnitude of the cell potential $| E_{c e l l} | = 70 m V$ .

If the 0.05 molar solution of $M^{+}$ is replaced by a 0.0025 molar $M^{+}$ solution, then the magnitude of the cell potential would be

The concentration of potassium ions inside a biological cell is at least twenty times higher than the outside. The resulting potential difference across the cell is important in several processes such as transmission of nerve impulses and maintaining the ion balance. A simple model for such a concentration cell involving a metal M is:
$M (s) | M^{+}$ (aq;0.05 molar)|| $M^{+}$ (aq;1 molar)|M(s)
For the above electrolytic cell the magnitude of the cell potential $| E_{c e l l} | = 70 m V$ .

For the above cell

Q. Concentration of

N a^{+}

ions outside a nerve cell is

\sim 100

times more than inside. The concentration of

K^{+}

ions is more inside the cells. The levels of

N a^{+}

ions and

K^{+}

ions are maintained by

Join BYJU'S Learning Program

The concentration of K+ ion inside a biological cell is 20 times higher than outside. The magnitude of potential difference the two sides is:

The correct option is B 77mVThis is a concentration cell,Ecell=0.0591log(C1C2)C1=20C2Ecell=0.059log(20)Ecell=0.0767V=76.7mV

The concentration of $K^{+}$ ion inside a biological cell is $20$ times higher than outside. The magnitude of potential difference the two sides is:

The correct option is B $77 m V$
This is a concentration cell,
$E_{c e l l} = \frac{0.059}{1} l o g (\frac{C_{1}}{C_{2}})$
$C_{1} = 20 C_{2}$
$E_{c e l l} = 0.059 l o g (20)$
$E_{c e l l} = 0.0767 V$
$= 76.7 m V$