Tag: biology
Questions Related to biology
First heart transplant was performed by
Which organs of a brain dead individual can be donated?
Most common type of absorbent for $H _{2}S$ removal is
According to fluid mosaic model (proposed by Singer and Nicolson), plasma membrane is composed of
The cell membrane engulfs its food by a process called as
Movement of solvent molecule from a region of its higher concentration to a region of its lower concentration through a semi-permeable membrane, is referred to as.
Read the given statements and select the correct ones.
(i) A membrane which permits the passage of pure solvent molecules to pass through it and not the solute particles is called semi-permeable.
(ii) A membrane which allows some substances to pass through it more readily than others is known as selectively/differentially permeable.
(iii) All living biological membranes are perfectly semipermeable.
Monovalents like $Na^+$, $K^+$ .......... membrane permeability, while divalents like $Ca^{2+}$ .......... the same.
A semi-permeable membrane allows larger molecules to pass through but prevents the smaller ones.
Term plasmodesmata was first used by