Which motion of particles across a membrane requires energy?

A. From high concentration to low concentration

B. From low concentration to high concentration

C. With no concentration gradient

D. Through dynamic equilibrium

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Supratim PalLv10

10 Dec 2020

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If a negative charge is released in a uniform electric field, it will move

A. from low to high potential

B. in circular motion

C. in the direction of the electric field

D. from high to low potential

E. In a direction perpendicular to the electric field

As an electron moves in the direction the electric field lines.

A	it is moving from low potential to high potential and gaining electric potential energy.
B	it is moving from low potential to high potential and losing electric potential energy.
C	it is moving from high potential to low potential and gaining electric potential energy.
D	it is moving from high potential to low potential and losing electric potential energy.
E	both its electric potential and electric potential energy remain constant.