calcitic and aragonitic skeletons of marine invertebrates
Okazaki fragments
Platelets
[Mn(CO)5],ch3,cl and H derived from octahedral fragments are examples of isolobal.
You may be referring to the DNA ladder used in gel electrophoresis. The ladder is a collection of DNA fragments of known size (e.g. 100, 500, 1000, 2000, 5000, 10000 base pairs) so that if it is loaded beside the samples, it can offer a 'ruler' that can be used to determine the size of the fragments in the samples.
To separate and analyze DNA fragments and protein fragments by weight. If you have digested some bacterial DNA, for instance, then you can tell by running the fragmented DNA in the gel whether you have digested the correct base length.
Limestones are predominantly composed of the mineral calcite, which is a form of calcium carbonate. They often also contain small amounts of other minerals and impurities, which can affect their color and texture. Limestones are formed through the accumulation of skeletal fragments of marine organisms like coral, shellfish, and algae.
The limestone consists mainly of calcium carbonate: CaCO3 ,Calcite. Like most other sedimentary rocks, limestones are composed of grains, however, around 80-90% of limestone grains are skeletal fragments of marine organisms such as coral or foraminifera. Other carbonate grains comprising limestones are ooids, peloids, intraclasts, and extraclasts. Some limestones do not consist of grains at all and are formed completely by the chemical precipitation of calcite or aragonite. (i.e. travertine.)
Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate. Many limestones are composed from skeletal fragments of marine organisms such as coral or foraminifera.
While limestone is mostly composed of the skeletal fragments of deceased marine life, that is not the only component. Limestone also contains traces of clay, sand, and silt. Limestone can also be created by precipitating calcite or aragonite.
Carboniferous limestone is a type of sedimentary rock that is formed from the accumulation of skeletal fragments of marine organisms such as corals and mollusks. It is typically composed of calcium carbonate and is known for its durability and suitability for building materials like aggregates and cement.
Bone fragments can be broken down by specialized cells called osteoclasts. These cells secrete enzymes and acids that break down the mineralized matrix of bone, allowing the fragments to be reabsorbed into the body for recycling and potential use in bone remodeling or repair.
"Limestones are composed of grains; however, most grains in limestone are skeletal fragments of marine organisms such as Coral or Foraminifera."
Limestone and chalk are formed from organic material Limestone - Clastic shell fragments Chalk - Microscopic shells of calicum carbonate plates formed by single celled algaes Chert - Microscopic siliceous organisms, recrystallized silica
No, a conglomerate is not a biochemical. A conglomerate is a geological term referring to a rock made up of different kinds of minerals and rock fragments. Biochemicals, on the other hand, are chemicals produced by living organisms.
Limestone is a biochemical rock that can contain fossils. It is formed from the accumulation of calcite or aragonite shells or skeletal fragments of organisms such as corals, foraminifera, and mollusks. Over time, these remains can be compressed and preserved in the rock.
The particles in shell limestone are primarily fragments, specifically the remains of shell material from marine organisms such as mollusks and corals. These fragments are typically composed of calcium carbonate and can vary in size and shape. Over time, these shell fragments accumulate and undergo lithification, forming the cohesive rock known as shell limestone.
Sandstone is primarily a clastic sedimentary rock composed of sand-sized grains, usually derived from the weathering of pre-existing rocks. While it can contain biochemical components, such as fossils or grains formed from biological processes (like silica from diatoms), it is not classified as a biochemical rock. Instead, biochemical rocks are typically those formed from the accumulation of organic materials, such as limestone made from coral or shell fragments. Therefore, while sandstone may incorporate some biochemical elements, its primary classification is as a clastic rock.