Test your basic knowledge |

CLEP Natural Science

Subjects : clep, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Two identical chromosomes that split and contain the same genetic material






2. The second phase of mitosis - during which the chromosomes line up across the center of the cell






3. Transport of a substance across a cell membrane against the concentration gradient






4. Small structures in the cytoplasm of a cell that do special jobs






5. Change in a DNA sequence that affects genetic information






6. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site






7. Classification of plant which survives only a single season






8. Structure within ovary of plant that contains egg cells






9. A substance that must join with the enzyme to enable it to fit the substrate






10. Disk-like plates which are the site of photosynthesis in chloroplasts






11. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells






12. Proteins that act as biological catalysts






13. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.






14. The complete genetic material contained in an individual






15. Classification of plant which forms seeds inside a protective chamber called an ovary - inside a flower






16. Cell division which produces two identical cells






17. Modification of a cell by the incorporation of exogenous DNA






18. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells






19. Classification of plant whose life cycle survives two seasons






20. Formed when cell membrane surrounds a molecule outside the cell and ingests it






21. Stores - packages and ships proteins






22. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy






23. Used to examine tiny cell organelles






24. Packaged protein or other substance produced by golgi apparatus/endoplasmic reticulum






25. The female part of a flower composed of ovary and style and stigma and ovules






26. Has a nucleus - has organelles or other cell parts






27. Projections on cell membrane increase surface area






28. Sticky portion at the top of the style which traps pollen






29. Area where the chromatids of a chromosome are attached






30. Green pigment contained in the grana






31. An internal membrane system in which components of cell membrane and some proteins are constructed. rough - instrumental in protein synthesis; smooth - processes lipids fats and steroids






32. Matching Chromosomes that are similar but not identical






33. Production of a chemical compound by a living organism






34. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2






35. Powerhouse of the cell - organelle that is the site of ATP (energy) production






36. Stalk that supports the flower






37. Reproductive cells - have only half the number of chromosomes






38. Living thing






39. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle






40. Body of a chloroplast containing grana






41. Smallest unit of most living things






42. Have tissues made of cells that transport water and nutrients throughout the plant






43. A cell having two sets of chromosomes or twice the haploid number






44. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)






45. Cell division that produces reproductive cells in sexually reproducing organisms






46. The organic process whereby the DNA sequence in a gene is copied into mRNA






47. Breakdown of more complex substances into simpler ones with release of energy






48. The regular sequence of growth and division that cells undergo






49. The process of transfering genetic material from one cell to another






50. Vacuole membrane