0
What is the process called when molecules must join with another molecule such as a protein to get through a membrane?
Wiki User
∙ 11y ago
facilitated diffusion
Wiki User
∙ 11y ago
The process is called facilitated diffusion. It is a type of passive transport that involves the movement of molecules across a membrane with the help of specific proteins called carrier proteins or channel proteins. These proteins assist the molecules in crossing the membrane by providing a pathway.
Add your answer:
Earn +20 pts
What is the process by which large molecules enter a cell through pouches in the membrane?
The process by which large molecules enter a cell through pouches in the membrane is called endocytosis. During endocytosis, the cell membrane forms a pouch around the molecule, encloses it, and brings it into the cell as a vesicle. This allows the cell to take in larger molecules that would not be able to pass through the membrane on their own.
What type of molecule can be used as a tunnel to move compounds across the cell membrane?
Carrier proteins are a type of molecule that can be used as a tunnel to move compounds across the cell membrane. These proteins bind to specific molecules and undergo conformational changes to transport them across the membrane. This process is known as facilitated diffusion.
What are the steps of facilitated diffusion?
Facilitated diffusion involves the movement of molecules across a cell membrane with the help of transport proteins. The steps include the binding of the molecule to the specific protein, conformational changes in the protein to carry the molecule across the membrane, and the release of the molecule on the other side of the membrane. This process does not require energy input from the cell.
Which requires the use of energy to move a molecule across a cell membrane?
Active transport requires the use of energy to move a molecule across a cell membrane, usually against its concentration gradient. This process relies on protein pumps that use ATP as an energy source to drive the movement of molecules.
Synthesis of an ATP molecule requires two ADP molecules?
The synthesis of an ATP molecule from two ADP molecules involves the condensation reaction where a phosphate group is transferred from one ADP molecule to the other, forming a high-energy phosphoanhydride bond. This process is catalyzed by the enzyme ATP synthase, which is located in the inner mitochondrial membrane or thylakoid membrane in the cells. The energy for this reaction is usually derived from the electrochemical gradient across the membrane, which drives the rotation of ATP synthase and facilitates ATP synthesis.
What is the process by which large molecules enter a cell through pouches in the membrane?
The process by which large molecules enter a cell through pouches in the membrane is called endocytosis. During endocytosis, the cell membrane forms a pouch around the molecule, encloses it, and brings it into the cell as a vesicle. This allows the cell to take in larger molecules that would not be able to pass through the membrane on their own.
Energy is transfered when molecules bump into one another in what?
Energy is transferred when molecules bump into one another in a process called conduction. In this process, kinetic energy is transferred from a molecule with higher energy to a molecule with lower energy through direct contact.
What is additional reaction?
An addition reaction is when 1 molecule combines with another molecule and becomes 1 bigger molecule. There are no other products in this process; just the 2 molecules.
How do carrier protiens transport substances across cell membrane?
Carrier proteins facilitate the transport of substances across the cell membrane by binding to the specific molecules they transport and undergoing conformational changes to move the molecules across the membrane. This process is often referred to as facilitated diffusion. It allows for the transport of specific molecules, such as glucose or ions, across the membrane, down their concentration gradient.
What are the steps of facilitated diffusion?
Facilitated diffusion involves the movement of molecules across a cell membrane with the help of transport proteins. The steps include the binding of the molecule to the specific protein, conformational changes in the protein to carry the molecule across the membrane, and the release of the molecule on the other side of the membrane. This process does not require energy input from the cell.
Synthesis of an ATP molecule requires two ADP molecules?
The synthesis of an ATP molecule from two ADP molecules involves the condensation reaction where a phosphate group is transferred from one ADP molecule to the other, forming a high-energy phosphoanhydride bond. This process is catalyzed by the enzyme ATP synthase, which is located in the inner mitochondrial membrane or thylakoid membrane in the cells. The energy for this reaction is usually derived from the electrochemical gradient across the membrane, which drives the rotation of ATP synthase and facilitates ATP synthesis.
How do cells transport molecules across a cell membrane?
Molecules can move through the membrane in many ways. If the molecule is hydrophobic (or lipophilic) it can easily pass through the membrane. Other than that, most molecules move through the membrane through channels (which flow towards the molecules concentration gradient) or pumps (which flow against a molecules concentration gradient using energy).
Which requires the use of energy to move a molecule across a cell membrane?
Active transport requires the use of energy to move a molecule across a cell membrane, usually against its concentration gradient. This process relies on protein pumps that use ATP as an energy source to drive the movement of molecules.
What molecules serve as intermediate electron carriers in the process of cellular respiration?
NAD+ (nicotinamide adenine dinucleotide) and FAD (flavin adenine dinucleotide) serve as intermediate electron carriers in cellular respiration. They accept electrons from the breakdown of glucose and transfer them to the electron transport chain for the production of ATP.
How does endocytosis differ from the process shown in transparency?
Endocytosis is a cellular process where materials are brought into a cell by engulfing them in a vesicle formed from the cell membrane. On the other hand, the process shown in transparency refers to a method where materials are passed through a semipermeable membrane driven by a concentration gradient, usually involving filtration or diffusion. The key distinction is in the mechanism of material uptake: endocytosis involves vesicle formation, while the process in transparency involves passage through a membrane without vesicle formation.
How do cells move large molecules into and out of the cell?
Cells use a variety of methods to move large molecules in and out of the cell. Endocytosis involves the cell engulfing large molecules by forming vesicles from the cell membrane. Exocytosis is the reverse process, where vesicles containing large molecules fuse with the cell membrane to release their contents outside of the cell. Transport proteins embedded in the cell membrane can also facilitate the movement of large molecules across the membrane through processes like facilitated diffusion and active transport.
What process do water molecules cross the cell membrane?
Water molecules cross the cell membrane through a process called osmosis, which is driven by the concentration gradient of water inside and outside the cell. Aquaporin proteins on the cell membrane facilitate the movement of water molecules into and out of the cell.
