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Unlike obligate anaerobes, they are not poisoned by oxygen. They can be found evenly spread throughout the test tube. A facultative anaerobic organism is an organism that makes ATP by aerobic respiration if oxygen is present, but is capable of switching to fermentation if oxygen is absent. [1] [2]
Alfred Russel Wallace (8 January 1823 – 7 November 1913) was an English [1] [2] [3] naturalist, explorer, geographer, anthropologist, biologist and illustrator. [4] He independently conceived the theory of evolution through natural selection; his 1858 paper on the subject was published that year alongside extracts from Charles Darwin's earlier writings on the topic.
^a Irish-medium exams are only available in Northern Ireland, from the CCEA exam board. ^b Welsh-medium exams are only available in Wales, from the WJEC exam board. The General Certificate of Secondary Education ( GCSE ) is an academic qualification in a range of subjects taken in England , Wales , and Northern Ireland , having been introduced ...
Reading is the process of taking in the sense or meaning of symbols, often specifically those of a written language, by means of sight or touch. [1] [2] [3] [4]For educators and researchers, reading is a multifaceted process involving such areas as word recognition, orthography (spelling), alphabetics, phonics, phonemic awareness, vocabulary, comprehension, fluency, and motivation.
Although zooids are microscopic, colonies range in size from 1 cm (1 ⁄ 2 in) to over 1 m (3 ft 3 in). [18] However, the majority are under 10 cm (4 in) across. [ 21 ] The shapes of colonies vary widely, depend on the pattern of budding by which they grow, the variety of zooids present and the type and amount of skeletal material they secrete .
The lacrimal gland is a compound tubuloacinar gland, it is made up of many lobules separated by connective tissue, each lobule contains many acini.The acini composed of large serous cells which, produce a watery serous secretion, serous cells are filled with lightly stained secretory granules and surrounded by well-developed myoepithelial cells and a sparse, vascular stroma.
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