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Biology Crossword Puzzle 1 2 3 4 5 6 7 8 9 11 10 12 13 14 15 16 17 18 19 20 21 22 23 27 29 24 25 28 26 Across Down 4. What accepts and holds two high-energy electrons and a hydrogen atom? 6. Hypothesis that is so well accepted by other scientists 8. Energy What is needed to start a reaction? 12. RNA Which molecule transfers amino acids to ribosomes as was specified by mRNA? 13. Means 'bacteria eater' 14. Reproduction sexually 16. What is this equation for? 6CO + 6H O --- C + H + O + 6O 18. When Cytoplasm extends itself and 'eats' a particle 19. Acid Fermation What term makes this equation? pyruvic acid + NADN ---- lactic acid NAD+ 23. The long molecules DNA is made of 25. Over Homologus pairs form tetrads and exchange portions of chromatids 28. An organized way of using evidence to learn about the natural world 29. Triphosphate What is the real name for ATP? 1. Pairing What is the name for adenine, thymine and guanine, cytosine parings? 2. Polymerase What is the principal enzyme involved in DNA replication? 3. One strain of bacteria that can infect another benign strand 5. What is the only spot that an enzyme will bind to? 7. Cells with one set of genes 9. Term that means 'not in air' 10. Cycle In what cycle does the presence of oxygen, pyruvic acid in the glucose pass on to the second stage of reproduction? 11. and NADPH What two light dependent reactions re used in the Calvin Cycle (the word and is used in the answer) 15. Acid Which of the two nucleic acids contains sugar deoxyribose? 16. Scale What indicates the H+ levels in a solution? 17. Acid Which of the two nucleic acids contains sugar ribose? 20. The first stage of division in the cells nucleus 21. What process takes materials into the infolds, or pockets of the cell membrane? 22. Releases food energy by using ATP in the absence of oxygen 24. Theory What is the fundamental concept of biology? 26. Map What shows the relative location of each known gene? 27. Polymerase What enzyme is needed for transcription?