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When a protein facilitates the movement of substances across a cell membrane, it typically involves a process called transport. This can be either passive transport, where substances move along their concentration gradient without energy input (e.g., facilitated diffusion), or active transport, which requires energy to move substances against their concentration gradient. Transport proteins, such as channels or carriers, play a crucial role in ensuring that essential molecules enter or exit the cell efficiently.

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What change takes place in the cell membrane if a signal molecule causes a transport protein to open?

When a signal molecule activates a transport protein on the cell membrane, it undergoes a conformational change that opens a channel or alters its affinity for the molecule it transports. This allows specific substances to move across the membrane, facilitating cellular communication and maintaining homeostasis.


where does active transport takes place which part of the cell?

Active transport takes place in the small intestine, where nutrients are absorbed from the intestine and into the bloodstream. More specifically, it is the structures known as villi that contain the protein receptors necessary for active transport to take place. The process also happens in the nephrons of the kidneys, where glucose and water/ions are selectively reabsorbed back into the bloodstream.


Difference between osmosis and active transport?

The difference between osmosis and active transport is that osmosis takes place only in water molecule and active transport takes place in takes place in the internal lining of the small intestine. 2 osmosis takes place in presence of concentration gradient and active transport against the concentration gradient.


What type of transportation takes place when a protein allows an ion to enter a cell but no additional energy is needed?

facilitated


Where in the cell does ETC reaction take place?

The Electron Transport Chain takes place in the cristae of the mitochondria.


Protein synthesis takes place?

Mainly in the cytoplasm. As ribosomes are present attached to Endoplasmic reticulum(ER), here also protein synthesis takes place.


Where in a cell does protein synthesis take place?

In cells protein is made when the cells mate and then the synthesis takes place. It takes place in the mitochondria.


Where does protein synthesis take place within the cell?

Protein Synthesis takes place in the ribosomes and in the mitochondria of a cell.


Where does the electron transport chain take place in the mitochondria?

The electron transport chain takes place in the inner mitochondrial membrane of the mitochondria. It consists of a series of protein complexes that transfer electrons and generate a proton gradient across the inner membrane, which is used to produce ATP through oxidative phosphorylation.


Where does electron transport in photosynthesis take place?

Electron transport in photosynthesis takes place in the thylakoid membrane of the chloroplast. It involves a series of protein complexes that transfer electrons along a chain, creating a proton gradient that drives ATP synthesis and ultimately produces NADPH for the Calvin cycle.


Rail transport advantages?

The railways are the cheapest mode of transport to a distant place. It takes less time.


What part of protein synthesis takes place in a ribosome?

Protein synthesis occurs at the ribosomes. A gene is expressed in the form of a protein. A protein is the ultimate product of a gene.