Minerals Absorbed

Question: Are both vitamins and minerals absorbed in the gut? & Do they both require stomach acid to break them down? Thanks.

Answer: All nutrients, including vitamins and minerals, are absorbed in the gut, or to be precise, in the small intestine. They do not need breaking down in the stomach, although they may have come from foods that have to be broken down initially, both animal and plant. Stomach acid has the function of helping in the breakdown of protein into smaller particles ( amino-acids) which can be easily absorbed.

Question: The water and minerals absorbed by the roots usually first enter the?

Answer: The root hairs of the epidermis and then the cortex.

Question: It sucks that a lot of Vitamins need other minerals in order to be absorbed by the body : ( N E 1 have a list? It sucks that a lot of Vitamins need other minerals in order to be absorbed by the body : ( N E 1 have a list of all the top Vitamins and the corresponding Minerals they need to be absorbed? E.g. Calcium for Vitamin D, and Zinc for Vitamin A, and Protein for Vitamin C?

Answer: I am not sure what the question your asking is. I assume that you are trying to find the answer but asking it wrong. Sorry

Question: Why are minerals not absorbed from the soil by diffusion? Anyone know?

Answer: Its all about concentration - there is a high concentration of minerals etc within a plant relative to the soil around it. Thus minerals can not passively diffuse into the root cells. Active Transport is required to transport the useful minerals into the root cells.

Question: Explain how water and minerals are absorbed by the roots of a plant.?

Answer: The process of infiltration can continue only if there is room available for additional water at the soil surface. The available volume for additional water in the soil depends on the porosity of the soil and the rate at which previously infiltrated water can move away from the surface through the soil. The maximum rate that water can enter a soil in a given condition is the infiltration capacity. If the arrival of the water at the soil surface is less than the infiltration capacity, all of the water will infiltrate. If rainfall intensity at the soil surface occurs at a rate that exceeds the infiltration capacity, ponding begins and is followed by runoff over the ground surface, once depression storage is filled. This runoff is called Horton overland flow. The entire hydrologic system of a watershed is sometimes analyzed using hydrology transport models, mathematical models that consider infiltration, runoff and channel flow to predict river flow rates and stream water quality.

Question: how do you know whether all the vitamins and minerals are being absorbed? from foods, and also supplements

Answer: You don't. There's no way to know without complicated tests. If you're concerned that you're taking a lot of something but your body is acting like it's not getting any (lots of vitamin D but you still have rickets) see your doctor.

Question: are vitamins and minerals absorbed into the blood without being digested?

Answer: By digestion I assume you mean the process of breaking down food into simple carbohydrates, peptides, etc. Well vitamins and minerals are fairly simple compared to proteins, starches and those sort of things. However they will still be affected by ingestion and digestion. Minerals may be available as various salts and these may be converted in the acidic stomach. Vitamins such as B6 are complex structures that may or may not be attached to amino acids or carrier molecules. I think previous answers were generally correct but you really have to define what you mean by digestion and if you just mean a change of some sort after ingestion then the answer is not always.

Question: whats a good way to make sure all your vitamins and minerals are being absorbed?

Answer: The human body uses food to manufacture all its building blocks as well as to provide fuel. To do this, it performs several thousand different chemical reactions. Each reaction is controlled by "enzymes" and "coenzymes". Some of the coenzymes contain vitamins which the body cannot make by itself and which must be obtained from outside the body. # About 25% of US households do not have balanced meals to meet the requirements that the body needs in digesting enough nutrients to sustain the body's health and fuel factors. # Research has shown that almost all varieties of disease can be produced by the deficiency of vitamins, minerals, amino acids, and other nutrients. Vitamins are vital for your skin. The most important factor of nutritional deficiencies is the intense processing and refining of foods like cereals and sugar. # A lot of the vitamins in fruits and vegetables are lost between the farm and your plate. The longer the foods are stored before you eat them, the more nutrients are lost. Heat, light, and exposure to air all reduce the amount of vitamins, especially Vitamin C, thiamin, and folic acid. See this --> How to get most the most vitamins from your food?

Question: explain how water and minerals are absorbed by the roots of a plant.?

Answer: Absorption of water and minerals by roots: Water and mineral enter through root epidermis, cross the cortex, pass into the stele, and are carried upward in the xylem. Active accumulation of Mineral Ions. The cells cannot get enough mineral ions from the soil by diffusion alone. The soils solution is too dilute. ACTIVE TRANSPORT of these ions must occur. Specific carrier proteins in the plasma membrane attract and carry their specific mineral into the cell. A Proton Pump: H+ is pumped out of the cell causing a change in pH and a voltage across the membrane. This helps drive the anions and cations into the cell. Water and minerals cross the cortex in one of 2 ways: Via SYMPLAST which is the living continuum of cytoplasm connected by PLASMODESMATA. Via APOPLAST which is nonliving matrix of cell walls. At the endodermis the apoplastic route is blocked by the CASPARIAN STRIP. this is a ring of suberin around each endodermal cell. Here water and minerals MUST enter the stele through the cells of the endodermis. Water and minerals enter the stele via symplast, but xylem is part of the apoplast. Transfer cells selectively pump ions out of the symplast into the apoplast so they may enter the xylem. This action requires energy. Water transported up from the roots must replace water lost by transpiration. Xylem sap rises against gravity, driven by a gradient of water potential. Water flows from an area of high potential to an area of low potential. Water Potential is expressed in units of pressure: 1 bar is the pressure needed to push up a column of water 10 meters. 1 megapascal = 10 bars. Pure water has a potential of 0. Addition of pressure increases water potential. Addition of solutes decreases it. When transpiration is low, ions pumped into the stele decrease water potential and cause water uptake by the stele. This uptake force is called root pressure. It Cannot keep pace with transpiration, and can only force water up a few meters.

Question: How is iron (the mineral) absorbed and metabolised? Need help with my report on Iron for Science class Can't find it on google. If you can find a detailed page on iron, that would really help thanks! Also need to find how it is stored.

Answer: When it comes to iron and the body, you are better off researching heme iron and non-heme iron. http://ods.od.nih.gov/factsheets/iron.asp http://ibdcrohns.about.com/cs/nutrition/a/fdairon.htm Good luck with your report.

Question: Can protein be absorbed better with other vitamins/minerals?

Answer: it can be with an insulin, like a banana

Question: Do you loose Vitamin D3 when it is used to absorb minerals through the intestines? How is vitamin D3 used in the absorbtion of minerals like calcium through the intestines?

Answer: First let us make your question more objective: Two routes exist for the absorption of Ca across the intestinal epithelium: the paracellular pathway and the transcellular route. --->The paracellular pathway is passive, and it is the predominant means of Ca absorption when the luminal concentration of Ca is high. --->The transcellular route is most important in duodenum & it depends on vitamine D3. http://www.endotext.org/parathyroid/parathyroid3/figures3/figure8.gif From the intestinal lumen the Ca get in to the cell, there it must bind to an intracellular protein to be able to get out to the blood, this protein is CaBp (calicium binding protein), & it is produced by the cell itself. Well guess what, the synthesis of this protein is vitamin D dependent ! The vitamin D hormone circulating in the blood can then bind to VDRs (vitamin D receptor) in the nucleus of intestinal cells as well as in kidney and bone. There, the high-affinity VDR appears to activate genes that encode calcium-binding proteins such as calbindin-D, which is involved in intestinal calcium transport. Increases in the production of calbindin-D in the intestinal cells result in increased absorption of calcium through the gut. http://www.endotext.org/parathyroid/parathyroid3/figures3/figure6.gif So your question is : what happen to the vitamin D3 once bound to the nucleus VDR (vitamin D receptor) ??? sorry, i don't know :p

Question: can minerals be absorbed through the skin?

Answer: IN SHORT .... YES

Question: Can your skin absorb vitamins/ minerals from food you put directly on it? If I put some oatmeal or oranges on my skin, will my skin absorb the vitamins/minerals in it?

Answer: Generally, no. The problem is that the vitamin molecules are larger than the openings in your skin cells, so they can't be absorbed topically.

Question: true or false? water and minerals can be absorbed by the root hairs?

Answer: True!

Question: how does vitamins and minerals absorb by the body? digestion of vitains and minerals?

Answer: Different vitamins are absorbed with different mechanisms: the fat soluble vitamins A, D, E, and K are absorbed when they dissolve in small fat particles (chylomicrons) which move across the lipid soluble intestine cell membranes. The water soluble vitamins move into intestinal cells in different ways - vitamin C and riboflavin have a specific transporter to move them into the cell, while vitamin B6 is just taken up passively. Vitamin B12 is bound to a protein in the stomach called "Intrinsic factor", which facilitates its absorption later in the small intestine. B12 is required for adequate folate absorption. Minerals, again, have differing mechanisms - magnesium, for example, appears to be absorbed by both active and passive transport. Calcium requires vitamin D. Iron depends on availability of an iron-binding mucosal transport protein (transferrin) to facilitate uptake from the intestines. No set rules, you have to look up each individual vitamin or mineral to see how the body absorbs it.

Question: Are vitamins and minerals absorbed in the stomach or gut? Do they both require stomach acid to break them down? Thanks.

Answer: some require different types of foods to aid in the absorption. For example, vitamin A needs to be digested with something fatty because it is soluble in fat. Vitamins are absorbed in your intestines.