absorption

Cell membrane

...li", 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, the cell membrane is selectively permeable. This means that only some molecules can pass unhindered in or ...

Photosystem

...ain. 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 two distinct photosystem types. Other proteins serve to support the structure and electron pathways ...

Photosystem

...ain. 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 two distinct photosystem types. Other proteins serve to support the structure and electron pathways ...

Photosynthesis

... 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 the photosynthesis takes place. Photosynthesis in algae and bacteria Algae range from multicellul...

Photon

...ion 2.2 Spin 2.3 Quantum state 2.4 Molecular absorption 3 State in a vacuum 4 State in media ... the number of photons in this mode. Molecular absorption A typical molecule , M , has many different energy levels . When a molecule absorbs a photon, ...

Lipase

...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 play important roles in cell biology . Furthermore, lipases are involved in diverse biological proce...

Leaf

...tion of metabolic compounds, and (in some species) absorption of water. Most leraves show dorsoventral anatomy: ...e slight separation of the cells provides maximal absorption of carbon dioxide. This separation must be minimal to afford capillary action for water distribut...

Kidney

...involving aldosterone which increases sodium ion absorption in the convoluted tubule. Any rise or drop in blo... is in excess), which causes a change in the water absorption of the kidney tubule. Tissue fluid concentration thus returns to a mean of 98%. Terms renal ...

Insulin

... circulating amino acids; lack of insulin inhibits absorption increased potassium uptake – forces cells ...o absorb serum potassium; lack of insulin inhibits absorption arterial muscle tone – forces arterial wall muscle to relax, increasing blood flow, especia...

Photosynthesis

... 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 the photosynthesis takes place. Photosynthesis in algae and bacteria Algae range from multicellul...

Fungus

...d mycorrhizae , which assist their roots in absorption of nutrients and water . Contents showTocToggle("show","hide") 1 Human consumption 2 Structure 3 Reproduction 3.1 Sexual 3.2 Asexual 4 Nutrition and ecology 4.1 Pathogenic species 5 Taxonomy 6 Miscella...

Cell membrane

...li", 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, the cell membrane is selectively permeable. This means that only some molecules can pass unhindered in or ...

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 for filtering, removal of toxins and help processing of nutrients. In the large intestine, water is ...

Chloroplast membrane

...r thylakoid membrane . These are sites of light absorption and ATP synthesis, and contain many proteins, including those involved in the electron transport chain ....

Absorption spectrum

An absorption spectrum is a diagram depicting the wavelengths ...ng. If the material is a gas, this results in dark absorption lines seen in the spectrum when viewed through a spectroscope . The wavelengths of these lines show...