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MikeCrotch19251
22.07.2019 •
Chemistry
Consider the reaction below. hf + h2o h3o+ f- which is an acid-conjugate base pair? hf and h3o+ hf and f h2o and hf h2o and f
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Ответ:
Ответ:
The acid-conjugate base pair in the reaction is HF and F.
The conjugate acid refers to the specie that is formed when a base accepts a proton while a conjugate base is formed when an acid looses a proton. This is derived from the Brownstead - Lowry definition of acids.
For this reaction;
The acid is HF The conjugate base is F-Therefore, the acid-conjugate base pair in the reaction is HF and F.
Learn more about conjugate acid: link
Ответ:
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Genetics is a branch of biology concerned with the study of genes, genetic variation, and heredity in organisms.
Though heredity had been observed for millennia, Gregor Mendel, a scientist and Augustinian friar working in the 19th century, was the first to study genetics scientifically. Mendel studied "trait inheritance", patterns in the way traits are handed down from parents to offspring. He observed that organisms inherit traits by way of discrete "units of inheritance". This term, still used today, is a somewhat ambiguous definition of what is referred to as a gene.
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Genetic processes work in combination with an organism's environment and experiences to influence development and behavior, often referred to as nature versus nurture. The intracellular or extracellular environment of a living cell or organism may switch gene transcription on or off. A classic example is two seeds of genetically identical corn, one placed in a temperate climate and one in an arid climate . While the average height of the two corn stalks may be genetically determined to be equal, the one in the arid climate only grows to half the height of the one in the temperate climate due to lack of water and nutrients in its environment.
Etymology
The word genetics stems from the ancient Greek ' meaning "genitive"/"generative", which in turn derives from ' meaning "origin".
History
The observation that living things inherit traits from their parents has been used since prehistoric times to improve crop plants and animals through selective breeding. The modern science of genetics, seeking to understand this process, began with the work of the Augustinian friar Gregor Mendel in the mid-19th century.