Answer the fricken question!
Co-transport is when molecules or ions are transported across a membrane (in fixed ratios) at the same time. One example is the Na/Ca exchanger - which transports Na in and Ca out of the cell simultaneously.
The coenzyme that transports organic molecules into the citric acid cycle is coenzyme A (CoA). It acts by forming a thioester bond with acetyl groups derived from organic molecules, allowing them to enter the cycle for energy production.
Exocytosis transports large molecules, such as proteins and lipids, out of the cell. These molecules are packaged into vesicles within the cell and then released to the external environment when the vesicles fuse with the cell membrane.
Simple diffusion does not involve the use of transport proteins and relies on the concentration gradient of molecules for movement across the membrane. Facilitated diffusion, on the other hand, requires specific transport proteins to help facilitate the movement of molecules across the membrane, often against their concentration gradient.
A membrane sac that stores and transports molecules within a cell is called a vacuole. It plays a role in various cellular functions, such as maintaining turgor pressure, storing nutrients, and facilitating waste disposal. Vacuoles are found in both plant and animal cells, but they are larger and more prominent in plant cells.
mitoonchondria
Circulatory
Co-transport is when molecules or ions are transported across a membrane (in fixed ratios) at the same time. One example is the Na/Ca exchanger - which transports Na in and Ca out of the cell simultaneously.
The coenzyme that transports organic molecules into the citric acid cycle is coenzyme A (CoA). It acts by forming a thioester bond with acetyl groups derived from organic molecules, allowing them to enter the cycle for energy production.
Exocytosis transports large molecules, such as proteins and lipids, out of the cell. These molecules are packaged into vesicles within the cell and then released to the external environment when the vesicles fuse with the cell membrane.
Osmosis transports water molecules across a partially permeable membrane, such as a cell membrane. It does not transport other types of materials, like ions or larger molecules.
Undigested nutrients in a vacuole are typically broken down further by enzymes within the vacuole to release smaller molecules. These smaller molecules can then be transported across the vacuole membrane into the cell's cytoplasm for utilization.
Iron is an essential element in hemoglobin, as it binds to oxygen molecules in the lungs and transports them to tissues throughout the body.
Simple diffusion does not involve the use of transport proteins and relies on the concentration gradient of molecules for movement across the membrane. Facilitated diffusion, on the other hand, requires specific transport proteins to help facilitate the movement of molecules across the membrane, often against their concentration gradient.
The process that transports particles through the cell membrane between phospholipid molecules is called passive diffusion. In passive diffusion, particles move from an area of higher concentration to an area of lower concentration without the need for energy input.
A membrane sac that stores and transports molecules within a cell is called a vacuole. It plays a role in various cellular functions, such as maintaining turgor pressure, storing nutrients, and facilitating waste disposal. Vacuoles are found in both plant and animal cells, but they are larger and more prominent in plant cells.
it transports oxygen (there are 4 atoms of iron in one haemoglobin, which means that it can transport 4 molecules of oxygen..)