Absorption in Biological Definition

Absorption spectrum

... An absorption spectrum is a diagram depicting the wavelengths ... If the material is a gas, this results in dark absorption lines seen in the spectrum when viewed through a ... spectrum External links Solar absorption spectrum ...

Insulin

... absorb serum potassium; lack of insulin inhibits absorption arterial muscle tone – forces arterial ... The increased insulin level causes glucose absorption and storage, reducing glycogen to glucose ... eaten (see glycemic index ) affects intestinal absorption rates. Glucose from some foods is absorbed more ...

Kidney

... a homeostatic process involving aldosterone which increases sodium ion absorption in the convoluted tubule. Any rise or drop in blood osmotic pressure due ... the secretion if water is in excess), which causes a change in the water absorption of the kidney tubule. Tissue fluid concentration thus returns to a mean ...

Leaf

... of gas exchange, secretion of metabolic compounds, and (in some species) absorption of water. Most leraves show dorsoventral anatomy: the upper (adaxial) and ... advantage of light. The slight separation of the cells provides maximal absorption of carbon dioxide. This separation must be minimal to afford capillary ...

Photon

... 2.1 Creation 2.2 Spin 2.3 Quantum state 2.4 Molecular absorption 3 State in a vacuum 4 State in media 5 See also 6 ... of the modes and the number of photons in this mode. Molecular absorption A typical molecule , M , has many different energy levels . When a ...

Chloroplast membrane

... , there is a system of interconecting flattened membrane compartments, called the lamellae , or thylakoid membrane . These are sites of light absorption and ATP synthesis, and contain many proteins, including those involved in the electron transport chain . ...

Digestion

... where it is further mixed with secretions such as bile , which helps aid in fat digestion, and insulin , to process sugars . Most nutrient absorption takes place in the small intestine, after which food is passed to the large intestine . Blood which has absorbed nutrients passes through the liver ...

Cell membrane

... are dense with involutions, all similar in size. The finger-like projections, called "microvilli", increase cell surface area and facilitate the absorption of molecules from the outside. Synapses are another example of highly structured membrane. Transport across membranes As a lipid bilayer, ...

Fungus

... to toppling. The vast majority of vascular plants are associated with mutualistic fungi, called mycorrhizae , which assist their roots in absorption of nutrients and water . Contents showTocToggle("show","hide") 1 Human consumption 2 Structure 3 Reproduction 3.1 ...

Photosynthesis

... millimetre of leaf. The surface of the leaf is uniformly coated with a water-resistant, waxy cuticle , that, protects the leaf from excessive absorption of light and evaporation of water. The transparent, colourless epidermis layer allows light to pass through to the mesophyll cells where most of ...

Lipase

... called the lysosome . Other lipase enzymes, such as pancreatic lipases, are found in the spaces outside of cells and have roles in the metabolism, absorption and transport of lipids throughout the body. As biological membranes are integral to living cells and are largely composed of phospholipids, lipases ...

Photosynthesis

... millimetre of leaf. The surface of the leaf is uniformly coated with a water-resistant, waxy cuticle , that, protects the leaf from excessive absorption of light and evaporation of water. The transparent, colourless epidermis layer allows light to pass through to the mesophyll cells where most of ...

Photosystem

... the energy reaches the chlorophyll a, it releases two electrons into an electron transport chain. Though chlorophyll a normally has an optimal absorption wavelength of 660 nanometers , it associates with different proteins in each type of photosytem to slightly shift its optimal wavelength, producing ...

Photosystem

... the energy reaches the chlorophyll a, it releases two electrons into an electron transport chain. Though chlorophyll a normally has an optimal absorption wavelength of 660 nanometers , it associates with different proteins in each type of photosytem to slightly shift its optimal wavelength, producing ...

Cell membrane

... are dense with involutions, all similar in size. The finger-like projections, called "microvilli", increase cell surface area and facilitate the absorption of molecules from the outside. Synapses are another example of highly structured membrane. Transport across membranes As a lipid bilayer, ...