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. The substance acted upon by an enzyme






2. In photosynthesis - this is the splitting of water by light






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






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






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






6. Process by which a cell releases large amounts of material






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






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






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






10. Double-stranded chains of proteins which give structure to the cell






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






12. Composed of a bilayer of lipids embedded with globular proteins






13. The complete genetic material contained in an individual






14. Smallest unit of most living things






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






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






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






18. Different forms of a gene






19. Classification of plant which survives only a single season






20. Cell organelle filled with enyzmes need to break down certain materials in the cells






21. The part of the stamen that contains pollen






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






23. Cells that lack a membrane-bound nucleus and membrane-bound organelles






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






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






26. 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






27. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration






28. The stalk of a stamen that supports the anther






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






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






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






32. Cell division which produces two identical cells






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






34. Projections on cell membrane increase surface area






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






36. Strong layer around the cell membrane in plants - algae - and some bacteria made of cellulose and lignin






37. Matching Chromosomes that are similar but not identical






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






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






40. Stalk that supports the flower






41. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane






42. Classification of plant whose life cycle survives two seasons






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






44. Site of protein synthesis. Free ribosomes - float unattached; attached ribosomes - attached to the ER






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






46. A cell having only one complete set of chromosomes






47. Living thing






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






49. Green pigment contained in the grana






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