Across
- 2. Atoms of the same number that differ in number of neutrons
- 3. a process that changes, transforms one set of compounds to another
- 5. the use of evidence to construct explanations and predictions of natural phenomenons as well as the knowledge generated from this process
- 6. science employs the scientific method to study living things
- 12. formed form when one or more electrons is transferred with another atom
- 15. a substance that speeds up the rate of a reaction without being consumed by the reaction
- 16. compound that produces hydrogen ions in a solution
- 17. Scale to indicate the concentration of H plus ions in a solution
- 21. compounds with an amino group on one side and a carboxyl on the other
- 22. is a constant set of conditions an organism needs to survive
- 27. to change over time
- 28. positive and negative charged atoms
- 31. the variable that is deliberately changed
- 32. a compound that releases hydrogen ions into a solution
- 33. a small chemical unit that makes up a polymer
- 35. The new organism has a single parent
- 40. combination of chemical reactions as it carries out its life processes
- 41. The reactants of enzyme catalyzed reactions
- 42. the substance that is dissolved
- 44. a material composed of two or more elements or compounds that are physically mixed together but not chemically combined.
- 45. Energy needed to get a reaction started
- 46. a signal to which an organism responds
- 48. a logical interpretation based on what scientist already know
- 49. The variable that is observed and changes as a response of the independent variable
- 51. biological catalysts that are usually proteins
- 52. basic unit of all matter
Down
- 1. the substance in which the solute is dissolved
- 4. monomers that consists of 5 carbon sugar, a phosphate group and a nitrogenous base
- 6. weak acids that reacts with strong acids to prevent sharp sudden changes in pH
- 7. macromolecules containing nitrogen, carbon, hydrogen, and oxygen
- 8. polymers assembled by nucleotides
- 9. the attraction between molecules of a different substance
- 10. involves observing and asking questions, forming hypotheses, conducting controlled experiments, collecting and analyzing data, and drawing conclusions
- 11. is a personal, rather than scientific, point of view for, or against something
- 13. compound made up of carbon, oxygen and hydrogen
- 14. molecules slightly attracted to oppositely charged regions nearby
- 18. bond- Formed from when one or more electrons is shared between another atoms
- 19. substance formed by chemical reaction of 2 or more elements in definite proportions
- 20. a mixture when all the components are distributed evenly
- 23. mixture of water and nondissolved material
- 24. are descriptive and involves characteristics that can not usually be measured\
- 25. made up of many monomers to build a macromolecule
- 26. numbers obtained by counting or measuring
- 29. Cells from 2 parents unite to produce the first cell of a new organism
- 30. The elements or compounds produced by a chemical reaction
- 34. a tentative scientific explanation that can be tested by further observation or experimentation
- 36. large vary groups of macromolecules which are generally not soluble in water
- 37. The elements or compounds that engage in a chemical reaction
- 38. structure that contains cells genetic material in form of DNA
- 39. changing factors as a result of a hypothesis rejection
- 43. This genetic code, with a few minor variations, determines the inherited traits of every organism on Earth.
- 47. the act of noticing and describing events or process in a carefully orderly way
- 50. is a pure substance that consists of entirely of one type of atom