ipl-logo

Transport Of Molecules From One Side Of The Tube To The Other Side

703 Words3 Pages

In this experiment we are testing the transport of molecules from one side of the tube to the other side. Transport itself is the movement of molecules from one part of a cell to another, or from one side of the cell membrane to the other (Macmillan, 2010). The tube represents the membrane of a cell which is semipermeable, which means only certain molecules are let into and out of the cell by means of transport. The cell membrane is composed of two phospholipid layers which are separated by a fatty layer and allows the molecules entrance and exit in the cell. The phospholipids have two sides, a polar head and a non-polar tail. To create the layers, the phospholipids are lined up tail to tail and side by side to compose the two layers. This …show more content…

One type of transport is called active transport. Active transport is considered to be the movement of molecules from a place of low concentration to high concentration against the constant gradient, which is the flow of energy (Active transport, 2006). This moves molecules directly across the membrane to the other side with the help of a transport protein. Because this is going against the constant gradient and is using a transport protein, energy is needed (otherwise known as ATP in the cell). Without this energy, the transport would not be able to function. This type of transport is important because it allows the cell to maintain a different condition than its environment. Just like there are different types of transport, there are three different types of active transport: endocytosis, exocytosis, and protein …show more content…

Endocytosis is where molecules are too large to pass through the phospholipid layer, so the cell engulfs the materials to take it into the cell to be used (Active transport,2006). Exocytosis is the exact opposite of this. In this process, materials too large to pass through the membrane, such as hormones, are secreted from the cell by causing the intercellular vesicles to fuse with the plasma membrane and rid the materials into extracellular space (Exocytosis, 2009). The last type of active transport is called a protein pump, otherwise known as a sodium-potassium pump, or Na+ pump. This transport “pumps” three sodium molecules out of the cell, and takes two potassium molecules into the cell, through the cell membrane with the use of an ATP (energy) molecule (Cell membrane transport, 2007) The second type of transport is called passive transport. Unlike active transport, passive transport is the movement of molecules from a place of high concentration to low concentration (Macmillan, 2010). Also, this type of transport goes with the constant gradient, and not against it. Because of this, passive transport does not require an ATP molecule. This type of transport also has more than one subcategory. These include diffusion, facilitated diffusion, and

Show More
Related
746 Words | 3 Pages

The arrangement of holes, spaces, and membranes from fish to man

Read More
788 Words | 4 Pages

Lipids are also very rigid molecules that help keep the shape of the membrane.

Read More
1015 Words | 5 Pages

One example of how mobility can increase the chances of survival is a deer, if it wasn’t able to go as fast as it does deer would be extinct because most of the predators probably would’ve eaten them by now. Another example of how mobility has saved animals is how butterflies migrate south during the winter in order to stay alive and keep them from freezing to death or dying of

Read More
819 Words | 4 Pages

  Active transport is when passage of materials using energy.   Passive transport is the passage of materials using kinetic energy.   Molecules doesn 't have a preselected motion, and are always on the go.   If the molecules was to clash to have a clash or have a run in  with the membrane they would recover.   If the pore is open the molecules will move towards the open pore and sometimes there 's a possibility that it would recover and go through.

Read More
757 Words | 4 Pages

Many people are familiar with the term protein, in fact if you were to converse with a random individual about the function of proteins it is highly likely they would state its importance in building muscle. However, the class of biomolecules known as proteins have functions more diverse than simply increasing the dimensions of skeletal muscles. Of interest are transport proteins, particularly the CFTR which assists in transporting ions across cellular membranes. Failure of the CFTR to function properly affects the ability of ions to be transmitted across epithelial membranes, resulting in abnormal transmembrane potentials as well as respiratory problems which typically shorten the lifespans of those affected. Impairment of CFTR transport

Read More
1193 Words | 5 Pages

The mitochondrion is one of the most important organelles in eukaryotic cells. Widely referred to as the 'Powerhouse of the Cell', they are a feature present in all types of eukaryotic organisms including chloroplasts (only present in plants and algae). They are membrane enclosed organelles that consist of a smooth outer double membrane structure, the mitochondrial matrix and the narrow intermembrane space. Inside the mitochondria there are many folds called cristae. The outer membrane has many porin molecules on it that act as a filter, allowing small molecules, such as some proteins, to enter the intermembrane space but can't pass through to the impermeable inner membrane.

Read More
124 Words | 1 Pages

The transport of molecules that enter and exit out of the cell require an endomembrane system that separates and compartmentalizes the different cellular functions of a variety of organelles. In Cell Structures Involved in

Read More
433 Words | 2 Pages

The inner membrane is folded increasing the surface area of the

Read More
879 Words | 4 Pages

The conformational changes in the carrier protein occur randomly and as solute is able to bind on either side of the membrane the net movement of solute into the cell is achieved due to a higher concentration of solute on the outside compared with the inside of the cell. Therefore a higher proportion of solute binds when the protein is of the conformation where its sites are exposed to the extra cellular space and it comes closer to reaching saturation compared to its other conformation.[2] The diffusion via carrier proteins described above can be split up into three separate classes, each slightly differing in the minutia of the process. Firstly the passive form mentioned is known as Uniport, where the carrier protein facilitates transport of a single type of solute. If two specific solutes are being cotransported unidirectionally then it is known as symport, usually the free energy provided by the flux of one solute down its respective gradient is used to drive the uphill transport of the other molecule.

Read More
1015 Words | 5 Pages

In this practical agar jelly cubes will be used to represent a cell. AIM: To model diffusion in a practical form and investigate the effect of surface area to volume ratio. HYPOTHESIS: It is hypothesised the smaller the cube the quicker and bigger the rate of diffusion will be and with a larger cube there will be a smaller percentage of diffusion due to its bigger volume.

Read More
159 Words | 1 Pages

One of the chains has a kink as it is double bonded. The phospholipids arrange themselves into the bilayer so that the hydrophobic tails are pointing inwards as they repel away from the aqueous solution in the body, whilst the hydrophilic heads are attracted to the

Read More
902 Words | 4 Pages

Active transport requires energy for the effective movement of particles to be moved from one space to another. This action must have energy in the form of ATP because it is flowing opposite of its natural tendency. Therefore, this form of transport needs energy because it flows from low to high concentration, whereas passive transport moves particles from high to low concentration, not requ the purpose of osmosis is to balance the fluid on both sides of the membrane. and diffusion’s purpose is to balance the concentration of solutes on both sides of the

Read More
700 Words | 3 Pages

INTRODUCTION Diffusion takes place on molecules of liquid, gas or a solution. It is the movement of molecules from an area of higher concentration to an area of lower concentration down a concentration gradient in random motion (D G McKean, Dave Hayward 2014). The diffusion of molecules passing across a lipid bilayer is also affected by its “hydrophobicity”. Diffusion can be done without the use of energy due to the randomness of the movements of particles. Molecules move from areas where they are dominant, to areas where they are in little number without the influence of outside forces.

Read More
1184 Words | 5 Pages

These parts usually work together to achieve a specific goal. Transportation uses airplanes, motorbikes, vehicles, trains, people, information, energy, finance, materials, and time. All these parts operate together to relocate and move people and goods from one place to another. Technology has really played a bigger role in advancing the transportation systems which include road transport that automobiles use, water transportation that ships and speed boats use, air transportation that airplanes use, and space transportation that people use to go to the moon (AOTM 1). Road transportation is the common means of transport used to relocate people and goods.

Read More
682 Words | 3 Pages

Then, the centriole fibers shorten and pull apart the sister chromatids that make

Read More

More about Transport Of Molecules From One Side Of The Tube To The Other Side

Open Document