OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
endo and exocytosis
|
|
|
in a minute and later
|
|
|
hydrophobic and hydrophillic
|
|
|
osmosis and diffusion
|
Detailed explanation-1: -A substance diffuses over a membrane by passive transport as it diffuses along its concentration gradient without requiring any energy from the cell. The two types of passive transport are : Simple diffusion and facilitated diffusion .
Detailed explanation-2: -The passive forms of transport, diffusion and osmosis, move materials of small molecular weight across membranes. Substances diffuse from areas of high concentration to areas of lower concentration, and this process continues until the substance is evenly distributed in a system.
Detailed explanation-3: -Osmosis is a form of passive transport when water molecules move from low solute concentration(high water concentration) to high solute or low water concentration across a membrane that is not permeable to the solute. There is a form of passive transport called facilitated diffusion.