passive transport

PASSIVE TRANSPORT

GROUP 6

PASSIVE TRANSPORT

- also known as passive diffusion - It is a process by which an ion or molecule passes through a cell wall via a concentration gradient, or from an area of high concentratio n to an area of low concentration. - It does not require energy simply because molecules are moving in the direction they would be moving anyway.

smlipe dfiufosin

fleaiatctid dffiiuson

SIMPLE DIFFUSION

What is simple diffusion? In biology, a simple diffusion is a form of diffusion that does not require the assistance of membrane proteins.

How do

SIMPLE DIFFUSION

Function?

substance tends to move from a region of high concentration in diffusion to a region of lower concentration until equilibrium is reached. The total movement of molecules in and out of the more concentrated region and into the lesser concentrated one is till the concentration is equal.

IMPORTANCE

The importance of Simple diffusion is this is one of the ways by which the body employs so as to regulates the concentration of substances. Without it, biological molecules, ions and other compounds will not move to their concentration gradients readily and with ease

Simple

DIFFUSION

FACILITATEDDIFFUSION

• is the transport of substances across a biological

membrane from an area of higher concentration to an area of lower concentration with the help of a transport molecule

• Since substances move along the direction

of their concentration gradient, chemical energy is not directly required for ions and large molecules

FACILITATEDDIFFUSION

• is the transport of substances across a biological

membrane from an area of higher concentration to an area of lower concentration with the help of a transport molecule

• Since substances move along the direction

of their concentration gradient, chemical energy is not directly required for ions and large molecules

• Ions cannot pass through the plasma membrane because they carry a charge and are blocked by the hydrophobic core. So, they must pass through hollow proteins known as channel proteins

FACILITATEDDIFFUSION

• Large molecules, such as glucose, are simply too large and polar to pass through the small gaps in the plasma membrane. These molecules are also too large for channel proteins, so they require a special carrier protein.

• These large molecules enter the carrier protein and bind to the active site – which changes the conformation of the protein.

• This change causes the protein to open on the other side of the membrane, releasing the molecule and resetting the process

WHY DOES IMPORTANT?

Facilitated Diffusion

• important because it regulates what goes in and what goes out of the cell.

• The plasma membrane is the cellular structure that is responsible for the selective movements of substances.

OSMOSIS

• Osmosis is an example of diffusion in which molecules tend to distribute themselves evenly in space.

• Osmosis is a process in which solvents, such as water, pass from a solution of lower concentration to a solution of higher concentration through a semipermeable membrane. It’s a passive process, which means it happens without any expenditure of energy.

• A dilute solution contains a high concentration of water molecules , while a concentrated solution contains a low concentration of water molecules

OSMOSIS

• Cells contain dilute solutions of ions , sugars and amino acids . The cell membrane is partially permeable. Water will move into and out of cells by osmosis.

• Osmosis refers to the movement of water molecules only.

• This process was first documented by French physicist Jean-Antoine Nollet in 1748.

• there are two types of osmosis, the endosmosis and exosmosis

OSMOSISEXAMPLE

FUNCTION

Osmosis helps in stabilizing the internal environment of the organism by balancing the levels of water and intracellular fluids.

IMPORTANCE

Osmosis helps in retaining the turgidity of the cell. It plays an important role in the movement of stomata during transpiration

It balso provides the primary means by which water is transported into and out of cells.

REFERENCE

FACILITATED DIFFUSION

https://l.messenger.com/l.php?u=https%3A%2F%2Fbiologydictionary.net%2Fap-biology%2F2-6-membrane-transport%2F&h=AT34Ghq8TdtJk7dqhWITNOxTQ26WJj1E7otDTLo-A1PKjGBFIpZGInl_OWWNofiNwnhJgbr4AWt3I5I_agtV_ZFskBdBhCriPKrAmNrtLGhrlV5EZtytbfHv8ThEu4o2CbbEXQ

https://l.messenger.com/l.php?u=https%3A%2F%2Fbiologydictionary.net%2Fpassive-transport&h=AT34Ghq8TdtJk7dqhWITNOxTQ26WJj1E7otDTLo-A1PKjGBFIpZGInl_OWWNofiNwnhJgbr4AWt3I5I_agtV_ZFskBdBhCriPKrAmNrtLGhrlV5EZtytbfHv8ThEu4o2CbbEXQ

https://l.messenger.com/l.php?u=https%3A%2F%2Fwww.biologyonline.com%2Fdictionary%2Ffacilitated-diffusion&h=AT34Ghq8TdtJk7dqhWITNOxTQ26WJj1E7otDTLo-A1PKjGBFIpZGInl_OWWNofiNwnhJgbr4AWt3I5I_agtV_ZFskBdBhCriPKrAmNrtLGhrlV5EZtytbfHv8ThEu4o2CbbEXQ

OSMOSIS

You sent https://www.rankred.com/best-examples-of-osmosis/ 13 Best Examples of Osmosis In Everyday Life - RankRed Sent 19m ago Write to Mariane Nedine Espino Search

https://www.bbc.co.uk/bitesize/guides/zs63tv4/revision/4

REFERENCE

SIMPLE DIFFUSION

https://l.messenger.com/l.php?u=https%3A%2F%2Fbyjus.com%2Fneet%2Fsimple-diffusion%2F%23%3A~%3Atext%3DA%2520substance%2520tends%2520to%2520move%2Ctill%2520the%2520concentration%2520is%2520equal&h=AT0Urgw6XG_lBlqVNaAcSyRKqKd2v__sRLm90ED37tdtVUBIywOMFdKOyJ_lq1aN0Kuk5nI_UapC8ewLARksDDBf3so0CpyA4uS4o7uOpWjL55tf9EsoQOcjoDBnh3bl9V85JQ

https://l.messenger.com/l.php?u=https%3A%2F%2Fbyjus.com%2Fneet%2Fsimple-diffusion%2F%23%3A~%3Atext%3DA%2520substance%2520tends%2520to%2520move%2Ctill%2520the%2520concentration%2520is%2520equal&h=AT0Urgw6XG_lBlqVNaAcSyRKqKd2v__sRLm90ED37tdtVUBIywOMFdKOyJ_lq1aN0Kuk5nI_UapC8ewLARksDDBf3so0CpyA4uS4o7uOpWjL55tf9EsoQOcjoDBnh3bl9V85JQ

https://l.messenger.com/l.php?u=https%3A%2F%2Fwww.bbc.co.uk%2Fbitesize%2Fguides%2Fzqdhjty%2Frevision%2F3&h=AT0Urgw6XG_lBlqVNaAcSyRKqKd2v__sRLm90ED37tdtVUBIywOMFdKOyJ_lq1aN0Kuk5nI_UapC8ewLARksDDBf3so0CpyA4uS4o7uOpWjL55tf9EsoQOcjoDBnh3bl9V85JQ

https://l.messenger.com/l.php?u=https%3A%2F%2Fwww.biologyonline.com%2Fdictionary%2Fsimple-diffusion%23%3A~%3Atext%3DDiffusion%2520is%2520essential%2520in%2520the%2Cregulate%2520the%2520concentration%2520of%2520substances&h=AT0Urgw6XG_lBlqVNaAcSyRKqKd2v__sRLm90ED37tdtVUBIywOMFdKOyJ_lq1aN0Kuk5nI_UapC8ewLARksDDBf3so0CpyA4uS4o7uOpWjL55tf9EsoQOcjoDBnh3bl9V85JQ

MEMBERS

ALBERT ROQUE ANDREA KATHRYN DELA CRUZ JANEL ANGELO GONZALES JUSTINE ORONCE KIM DENISE OCAMPO MARIANE NEDINE ESPINO KIM FIONA AGUILUS

EXAMPLES

glucose and amino acid transport, gas transport, and ion transport.