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Plant cells are the cells present in green plants, photosynthetic eukaryotes of the kingdom Plantae. Their distinctive features include primary cell walls containing cellulose, hemicelluloses and pectin, the presence of plastids with the capability to perform photosynthesis and store starch, a large vacuole that regulates turgor pressure, the ...
The cell is the basic structural and functional unit of all forms of life. Every cell consists of cytoplasm enclosed within a membrane; many cells contain organelles, each with a specific function. The term comes from the Latin word cellula meaning 'small room'. Most cells are only visible under a microscope.
The Human Cell Atlas is a project to describe all cell types in the human body. The initiative was announced by a consortium after its inaugural meeting in London in October 2016, which established the first phase of the project. [ 1][ 2] Aviv Regev and Sarah Teichmann defined the goals of the project at that meeting, [ 3] which was convened by ...
The eukaryotes ( / juːˈkærioʊts, - əts / yoo-KARR-ee-ohts, -əts) [ 5] constitute the domain of Eukarya or Eukaryota, organisms whose cells have a membrane-bound nucleus. All animals, plants, fungi, and many unicellular organisms are eukaryotes.
In new study published in the American Chemical Society’s journal Nano Letters, experts found that simply washing your fruits and vegetables in the sink "cannot wholly remove pesticides" because ...
Senna tora is an herbaceous annual foetid herb. The plant can grow 30–90 centimetres (12–35 in) tall and consists of alternative pinnate leaves with leaflets mostly with three opposite pairs that are obovate in shape with a rounded tip. The leaves grow up to 3–4.5 centimeters long. The stems have distinct smelling foliage when young.
Arthropods ( / ˈɑːrθrəpɒd / ARTH-rə-pod) [ 22 ] are invertebrates in the phylum Arthropoda. They possess an exoskeleton with a cuticle made of chitin, often mineralised with calcium carbonate, a body with differentiated ( metameric) segments, and paired jointed appendages. In order to keep growing, they must go through stages of moulting ...
Homo sapiens. Linnaeus, 1758. Homo sapiens population density (2005) Humans ( Homo sapiens, meaning "thinking man") or modern humans are the most common and widespread species of primate, and the last surviving species of the genus Homo. They are great apes characterized by their hairlessness, bipedalism, and high intelligence.