Across
- 3. the breaking down in living organisms of more complex substances into simpler ones, with the release of energy
- 7. reproduction type of reproduction in which cells from two parents unite to form the first cell of a new organism
- 9. relatively constant internal physical and chemical conditions that organisms maintain
- 12. signal to which an organism responds
- 15. group or level of organization into which organisms are classified
- 16. hydrocarbons that contain only single bonds
- 17. protein catalyst that speeds up the rate of specific biological reactions
- 19. hydrocarbons that contain double or triple carbon-carbon bonds
- 22. macromolecule that contains carbon, hydrogen, oxygen, and nitrogen; needed by the body for growth and repair
- 23. groups of closely related species; the first part of the scientific name in binomial nomenclature
- 29. the synthesis in living organisms of more complex substances from simpler ones
- 30. compound made up of carbon, hydrogen, and oxygen atoms; type of nutrient that is the major source of energy for the body
- 32. a carbohydrate whose molecules consist of a number of sugar molecules bonded together
- 34. a compound that contains hydrocarbons, often associated with living things
- 35. system of naming and classifying organisms based on shared characteristics and universal rules
- 37. macromolecule made mostly from carbon and hydrogen atoms; includes fats, oils, and waxes
- 39. acid macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus
- 40. in classification, a group of similar genera
- 41. largest and most inclusive group in Linnaean classification
- 43. scientific study of life
- 44. reaction process that changes, or transforms, one set of chemicals into another set of chemicals
Down
- 1. (deoxyribonucleic acid) genetic material that organisms inherit from their parents
- 2. any substance that is composed of two molecules of simple sugars linked to each other
- 4. in classification, a group of closely related families
- 5. in classification, a group of closely related orders
- 6. elements or compounds produced by a chemical reaction
- 8. the combination of chemical reactions through which an organism builds up or breaks down materials
- 10. reactant of an enzyme-catalyzed reaction
- 11. change over time
- 13. larger, more inclusive taxonomic category than a kingdom
- 14. bond covalent bond formed between two amino acids
- 18. subunit of which nucleic acids are composed; made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base
- 20. reproduction process of reproduction involving a single parent that results in offspring that are genetically identical to the parent
- 21. molecules composed of many monomers; makes up macromolecules
- 24. study of the diversity of life and the evolutionary relationships between organisms
- 25. elements or compounds that enter into a chemical reaction
- 26. nomenclature classification system in which each species is assigned a two-part scientific name
- 27. the combination of many small molecules to form large molecules
- 28. in classification, a group of closely related classes
- 31. acid compound with an amino group on one end and a carboxyl group on the other end
- 33. substance that speeds up the rate of a chemical reaction
- 36. small chemical unit that makes up a polymer
- 38. energy energy that is needed to get a reaction started
- 42. simple sugar molecule