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Outside the cell is high concentration of hydrogen ions and low concentration of sucrose. Inside, is the opposite, low concentration of hydrogen ions, and high concentrations of sucrose. Cells use ATP to pump a hydrogen ion across the cell membrane, against the concentration gradient, and when the hydrogen ion goes to re-enter, it goes through a Sucrose-proton cotransporter. This means that the hydrogen ion (proton) take a sucrose molecule with it when it goes though the membrane.
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What Name one type of substance that is taken into a root hair cell using active transport?
ion
Is water a passive diffusion or facilitated diffusion or active trensport or phagocytosis?
Passive diffusion. Water moves from an area of high concentration to an area of low concentration. It is not facilitated diffusion, as it does not require transport proteins to assist it's movement. It is not active transport because it is not moving to an area of higher concentration, and it does not require enzymes or energy to move. Phagocytosis is also incorrect because it is when large particles are "enveloped" by the cell membrane of a larger cell and taken into the larger cell.
What ia an active transport using an example for explanation?
Active transport is similar to diffusion, in that it is the movement of molecules. However, whereas diffusion occurs passively and molecules move from an area of high concentration to an area of low concentration, active transport reverses this. Molecules are transported from an area of high concentration to an area of low concentration, and this requires energy in the form of ATP. Active transport accross a membrane takes place via specific transport proteins. ATP produced in respiration causes these proteins to change their 3D shape when a molecule binds with it, so that it is taken into the cell/transported from the cell against the concentration gradient. An analogy of a kissing gate can be used. So, for example, if the concentration of mineral salts inside a root hair cell is higher than that outside the cell in the soil, then diffusion cannot take place passively as the concentration gradient is not in the right direction. Mineral salts would not passively move from an area of low concentration (soil) into an area of high concentration (cell). In this case, active transport must be employed for the cell to absorb the ions in the soil. They bind to proteins on the cell membrane, which actively "carry" them into the cell using energy from respiration. In this way, the plant can absorb the mineral salts even though the passive diffusion gradient is the wrong way. Active transport can be defined as "the energy consuming transport of molecules or ions across a membrane against a concentration gradient, made possible by transferring energy from respiration."
What is an active transport?
The methods of active transport are endocytosis, phagocytosis, pinocytosis, and exocytosis. Phagocytosis is the ingestion of a smaller cell or cell fragment, a microorganism, or foreign particles by means of the local in folding of a cell's membrane and the protrusion of its cytoplasm around the fold until the material has been surrounded and engulfed by closure of the membrane and formation of a vacuole. Endocytosis is the transport of solid mater of liquid into a cell by means of a coated vacuole or vesicle. Pinocytosis is the transport of fluid into a cell by means of local in foldings by the cell membrane so that a tiny vesicle or sac forms around each droplet, which is then taken into the interior of the cytoplasm. Exocytosis is the transport of material out of a cell by means of a sac or vesicle that first engulfs the material and then is extruded through an opening in the cell membrane.
What transports protein through a cell?
== == Sugars and amino acids are taken up by a carrier-mediated transport systems into the small blood vessels in the intestinal walls then transported in the blood into the circulation.
Why active transport requires energy?
Active transportation is taken place against concentration gradient. So this requires energy .
How do nutrients first enter a cell?
nutrient are broken down before entering the cell.small parts of nutrients are taken inside a cell be diffusion and passive transport. there is no energy usage this kind of transport. but there are some big molecules that can not enter cell membrane. so there are taken by active transport.(there is a energy usage in active transport).
Is there a positive correlation between ATP hydrolysis and the amount of substance taken in active transport?
Yes
What Name one type of substance that is taken into a root hair cell using active transport?
ion
What happens to a chemical when its found to be dangerous?
Special precautions should be taken to warn, work, store, transport, disposal of wastes.
Explain why respiration rates may increase in the root hair cells during the uptake of mineral ions?
The minerals are taken up into the plant against the concentration gradient and so requires energy (ATP) to use active transport. Respiration provides the ATP.
Do glucose and fructose fit together easily form a sucrose molecule?
Yes, they do. Glucose and Fructose go through a condensation reaction to make sucrose (since H2O is taken out of the equation). Fructose and sucrose are isomers.
Do roots supply plants with water and minerals?
The minerals taken up by plants are not solid lumps they are dissolved in water, which is taken into the plant by its root system.
Is sucrose formed from frutose and glucose by a rearrangement?
Glucose and fructose are both six-carbon rings with hydroxyl (OH) groups bound to the carbons. To form sucrose one water molecule is released so the two monosaccharides can bind to one another.
Do the molecules fit easily together form maltose?
Yes, they do. Glucose and Fructose go through a condensation reaction to make sucrose (since H2O is taken out of the equation). Fructose and sucrose are isomers.
Why were horses taken to Australia?
food and transport
Why to supply energy in emergency glucose is injected in human body but not sucrose?
Sucrose is a complex carbohydrate while glucose is a simple carbohydrate. Sucrose can be taken but its synthesis takes time by than the person may become more week. Since glucose is already simple there is no need for its synthesis and hence it give instant energy. Therefore glucose is chosen over sucrose.
