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  1. For the Semester 1 exam Learn with flashcards, games, and more — for free.

  2. a subatomic particle with a single positive charge, found in the nucleus, gives the identity of the element. Outermost shell, the first shell has two electrons, the second is eight, the third also has eight electrons, the amount of valence electrons tells us the number of bonds an element can make. What does it mean?-.

  3. Study with Quizlet and memorize flashcards containing terms like Steps of the Scientific Method, independent variable, dependent variable and more.

  4. Answer key to the review guide that covers the major topics of basic biology, first semester. This can be used to study for final exams or other standardized tests.

  5. Review guide that covers the major topics of basic biology, first semester. This can be used to study for final exams or other standardized tests. Topics include: scientific method, cell bioloyg, protists, evolution and taxonomy, and invertebrates.

  6. 1A Exam practice 1 (a) C (b) (i) hydrogen bond (ii) It is a polar molecule. (iii) The cohesion of water molecules in the transpiration stream; producing surface tension that can be a habitat for insects such as pond skaters. (c) It takes a lot of heat to alter the temperature of a body of water. Therefore, ponds

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  8. Explore over 150 pages of A-level biology questions by topic, quizzes, explanations, exam tips, videos and other revision resources for OCR A, AQA, Edexel, Eduqas, Pre-U & CIE specifications. Resources curated by an expert teacher with 26 years experience teaching only A-level biology.