Please answer fast experts - Science - The Fundamental Unit of Life

Question

Please answer fast experts

Priyanka Sahu · Accepted Answer

Solution:

4 The cell membrane is selectively permeable This means that
the cell membrane allows the entry of only certain substances
and prevents the entry of other substances

The cell membrane or the plasma membrane is known as a selectively
permeable membrane because it regulates the movement of substances
in and out of the cell This means that the plasma membrane allows
the entry of only some substances and prevents the movement of some
other materials

5 Diffusion always causes particles to move from a region of
high concentration to a region of low
concentration

Diffusion is the movement of particles from a region of higher
concentration to a region of lower concentration
Diffusion is the net movement of anything from a region of
higher concentration to a region of lower concentration Diffusion
is driven by a gradient in concentration so basically it is the
process wherein the molecules merge as a result of their kinetic
energy of random motion It occurs in liquids and gases because
their molecules move randomly The molecules move from a region of
higher concentration to a region of lower concentration, down the
concentration gradient, until the concentration equalizes
throughout the medium