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. A substance that retards or stops enzymatic activity






2. Green pigment contained in the grana






3. Hollow tubes of protein about 25 nanometers in diameter - support the cell and moves organelles within the cell






4. Classification of plant whose life cycle survives two seasons






5. Structure within ovary of plant that contains egg cells






6. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid






7. Change in a DNA sequence that affects genetic information






8. Pores which allows materials to move in and out of the cell nucleus






9. A long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix






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






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






12. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division






13. (adenosine triphosphate) main energy source that cells use for most of their work






14. The part of the stamen that contains pollen






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






16. Stores - packages and ships proteins






17. Area where the chromatids of a chromosome are attached






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






19. Cell division which produces two identical cells






20. The stalk of a stamen that supports the anther






21. Division of the cytoplasm during cell division - new cell is formed






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






23. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes






24. Used to examine tiny cell organelles






25. The interchange of sections between pairing homologous chromosomes during the prophase of meiosis






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






27. Consists of DNA tightly coiled around proteins






28. Body of a chloroplast containing grana






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






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






31. The organ that bears the ovules of a flower - base of the pistil






32. Classification of plant which survives only a single season






33. The process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm through tRNA






34. Bead-like structure in chromatin - composed of a short length of DNA wrapped around a core of histone proteins






35. Vacuole membrane






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






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






38. Membrane-bound organelle that stores water and soluble substances






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






40. Two identical chromosomes that split and contain the same genetic material






41. Living thing






42. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes






43. Plants that grow year after year






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






45. Matching Chromosomes that are similar but not identical






46. The male reproductive organ of a flower consisting of anther - filament - and pollen






47. Classication of plant which produce seeds which are 'naked' (in cones)






48. Proteins that act as biological catalysts






49. Part of stem where growth occurs - contains meristem tissue that is capable of quick growth






50. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis