Search results
3 days ago · eukaryote, any cell or organism that possesses a clearly defined nucleus. The eukaryotic cell has a nuclear membrane that surrounds the nucleus, in which the well-defined chromosomes (bodies containing the hereditary material) are located. Eukaryotic cells also contain organelles, including mitochondria (cellular energy exchangers), a Golgi ...
3 days ago · Hybridization, as related to genomics, is the process in which two complementary single-stranded DNA and/or RNA molecules bond together to form a double-stranded molecule. The bonding is dependent on the appropriate base-pairing across the two single-stranded molecules. Hybridization is an important process in various research and clinical ...
3 days ago · Definition. Deoxyribonucleic acid (abbreviated DNA) is the molecule that carries genetic information for the development and functioning of an organism. DNA is made of two linked strands that wind around each other to resemble a twisted ladder — a shape known as a double helix. Each strand has a backbone made of alternating sugar (deoxyribose ...
3 days ago · Sulfur is an essential component of all living cells. It is the eighth most abundant element in the human body by weight, [98] about equal in abundance to potassium, and slightly greater than sodium and chlorine. [99] A 70 kg (150 lb) human body contains about 140 grams (4.9 oz) of sulfur. [100]
3 days ago · bone, rigid body tissue consisting of cells embedded in an abundant hard intercellular material. The two principal components of this material, collagen and calcium phosphate, distinguish bone from such other hard tissues as chitin, enamel, and shell. Bone tissue makes up the individual bones of the human skeletal system and the skeletons of ...
4 days ago · biodegradable plastics. Spoons, forks, and knives made of biodegradable starch-polyester compounds. bioplastic, moldable plastic material made up of chemical compounds that are derived from or synthesized by microbes such as bacteria or by genetically modified plants. Unlike traditional plastics, which are derived from petroleum, bioplastics ...
4 days ago · The word pesticide derives from the Latin pestis (plague) and caedere (kill).. The Food and Agriculture Organization (FAO) has defined pesticide as: . any substance or mixture of substances intended for preventing, destroying, or controlling any pest, including vectors of human or animal disease, unwanted species of plants or animals, causing harm during or otherwise interfering with the ...
