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WebNucleic acids, macromolecules made out of units called nucleotides, come in two naturally occurring varieties: deoxyribonucleic acid ( DNA) and ribonucleic acid ( RNA ). DNA is the genetic material found in living organisms, all the way from single-celled bacteria to multicellular mammals like you and me. Some viruses use RNA, not DNA, as their ... WebAQA has provided one comprehensive guide to ISAs in Science, including the mark scheme for who commonly asked questions, such as: Section 1 1. Name the two most useful … fietsroutes anwb knooppunten

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WebFigure 6 lllustrating the homopolymer and the block co-polymer formed from propene and ethene. The products of these two processes form a composite in which nodules of the block co-polymer are distributed with the homopolymer (Figure 7). Figure 7 The propene-ethene block co-polymer nodules dissipate impact energy and prevent cracking. http://www.gcsescience.com/o56.htm WebMost polymers are synthetic, meaning they are man-made and have been designed by chemical engineers. Different polymers are created all the time so that the demands of … fietsroutes appelscha