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Biological Molecules A Level Biology OCR AQA Edexcel
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Unlock full course: https://studymind.co.uk/online-course... • Our A-Level Biology Experts are here to help you ace A-Level Biology! • This week we are revising Biological Molecules • A-Level Biology can be tough but fortunately we’ve made this tutorial to help you score the A* you need for questions on everything to do with Biological Molecules. • Subscribe to Study Mind: https://www.youtube.com/c/StudyMind?s... • Free Revision Notes: https://studymind.co.uk/revision-note... • Free Past Papers: https://studymind.co.uk/resources/ • Biological molecules are the building blocks of biology. Biological molecules is a term that is typically used to characterize most molecules and ions in living organisms that contribute to various biological processes (e.g. metabolism, cell division, etc.) • Most biological molecules are organic compounds. Meaning that they are mostly made up of the atom carbon. • Biological molecules consist of many elements. In addition to carbon, these molecules also consist of oxygen, nitrogen, and hydrogen, which along with carbon makeup 96% of the human body’s mass! • There are four major classes of biological molecules. Although there are thousands of various biological molecules, the four major classes we will concern ourselves with in this chapter are carbohydrates, lipids, proteins, and nucleic acids. Together, these four are the most crucial molecules for sustaining life and are made up of the following elements: • Carbohydrates – C, H, O • Lipids – C, H, O • Proteins – C, H, O, N, S • Nucleic acids – C, H, O, N, P • Monomers are small units that form larger molecules. Monosaccharides, amino acids, and nucleotides are key monomers, important in making up some important polymers • Polymers consist of a chain of monomers. Polymers are simply very large, long, and complex molecules which consist of smaller and simpler monomers strung together in a chain • A-Level Biology Course: https://studymind.co.uk/online-course... • A-Level Biology Tutoring: https://studymind.co.uk/subject/a-lev...
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