WebLife is a quality that distinguishes matter that has biological processes, such as signaling and self-sustaining processes, from that which does not, and is defined by the capacity for growth, reaction to stimuli, metabolism, energy transformation, and reproduction. Various forms of life exist, such as plants, animals, fungi, protists, archaea, and bacteria.

WebJun 16, 2022 · Life Definition. Life is a characteristic of a living organism that distinguishes the latter from a dead organism or a non-living thing, as specifically distinguished by the capacity to grow, metabolize, respond (to stimuli), adapt, and reproduce. Life may also pertain to the biota of a particular region. Word origin: Old English līf (life, body).

WebBiological half-life (also known as elimination half-life, pharmacologic half-life) is the time taken for concentration of a biological substance (such as a medication) to decrease from its maximum concentration (C max) to half of C max in the blood plasma, and is denoted by the abbreviation .. This is used to measure the removal of things such as metabolites, …

WebBiochemistry or biological chemistry is the study of chemical processes within and relating to living organisms. A sub-discipline of both chemistry and biology, biochemistry may be divided into three fields: structural biology, enzymology and metabolism.Over the last decades of the 20th century, biochemistry has become successful at explaining living …

WebHow to define "life" is a sweeping question that affects whole branches of biology, biochemistry, genetics, and ultimately the search for life elsewhere in the universe.Comparing the semantic task to the ancient Hindu story of identifying an elephant by having each of six blind men touch only the tail, the trunk, or the leg, what answer a …

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WebA parent is a caregiver of the offspring in their own species.In humans, a parent is the caretaker of a child (where "child" refers to offspring, not necessarily age). A biological parent is a person whose gamete resulted in a child, a male through the sperm, and a female through the ovum. Biological parents are first-degree relatives and have 50% …

WebJun 03, 2003 · A further source of ambiguity in the definition of biological altruism concerns the time-scale over which fitness is measured. Conceivably, an animal might engage in a social behaviour which benefits another and reduces its own (absolute) fitness in the short-term; however, in the long-term, the behaviour might be to the animal's …

WebWhat is drug addiction? Addiction is defined as a chronic, relapsing disorder characterized by compulsive drug seeking and use despite adverse consequences.† It is considered a brain disorder, because it involves functional changes to brain circuits involved in reward, stress, and self-control. Those changes may last a long time after a person has stopped …

WebEcology (from Ancient Greek οἶκος (oîkos) 'house', and -λογία () 'study of') is the study of the relationships between living organisms, including humans, and their physical environment.Ecology considers organisms at the individual, population, community, ecosystem, and biosphere level. Ecology overlaps with the closely related sciences of …