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The Key Stage 1, 2 and 3 along with GCSE section covers a range of subjects. In Key Stage 1, 17 subjects are available, including Art and Design, Computing, Design and Technology, English, Geography, History, Maths, Music, Physical Education, PSHE, Citizenship, Religious Education, Science, and Modern Foreign Languages. [5]
Structural formula of a proposed tetranucleotide, later shown to be incorrect. It was proposed by Phoebus Levene around 1910. Phoebus Aaron Theodore Levene (25 February 1869 – 6 September 1940) was a Russian-born American biochemist who studied the structure and function of nucleic acids.
For GCSE Science the old single-award ‘science’ and ‘additional science’ options are no longer available, being replaced with a double award ‘combined science’ option (graded on the scale 9–9 to 1–1 and equivalent to 2 GCSEs). Alternatively pupils can take separate qualifications in chemistry, biology and physics.
The total amount of loss for healthy people in the developed world amounts to an estimated average of 1 mg a day for men, and 1.5–2 mg a day for women with regular menstrual periods. [31] People with gastrointestinal parasitic infections, more commonly found in developing countries, often lose more. [ 32 ]
Cell Biology in "The Biology Project" of University of Arizona. Centre of the Cell online; The Image & Video Library of The American Society for Cell Biology Archived 2011-06-10 at the Wayback Machine, a collection of peer-reviewed still images, video clips and digital books that illustrate the structure, function and biology of the cell.
The pollen tube's journey through the style often results in depth-to-diameter ratios above 100:1 and up to 1000:1 in certain species. In maize, this single cell can grow longer than 12 inches (30 cm) to traverse the length of the pistil. The internal machinery and the external interactions that govern the dynamics of pollen tube growth are far ...
The image is by MIBG scintigraphy, showing the tumor by radiation from radioiodine in the MIBG. Two images are seen of the same patient from front and back. The image of the thyroid in the neck is due to unwanted uptake of radioiodine from a radioactive iodine-containing medication by the thyroid gland in the neck.
Although the concentration of free cytoplasmic Mg 2+ is on the order of 1 mmol/L, the total Mg 2+ content of animal cells is 30 mmol/L [64] and in plants the content of leaf endodermal cells has been measured at values as high as 100 mmol/L (Stelzer et al., 1990), much of which buffered in storage compartments.