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. Change in a DNA sequence that affects genetic information






2. The part of an enzyme where the chemical reaction occurs






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






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






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






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






7. Projections on cell membrane increase surface area






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






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






10. Area where the chromatids of a chromosome are attached






11. Green pigment contained in the grana






12. Smallest unit of most living things






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






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






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






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






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






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






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






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






21. Different forms of a gene






22. A cell having only one complete set of chromosomes






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






24. Classification of plant which survives only a single season






25. Cell division which produces two identical cells






26. Classification of plant whose life cycle survives two seasons






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






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






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






30. Small - dense region within most nuclei in which the assembly of RNA proteins begins






31. The stalk of a stamen that supports the anther






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






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






34. Stores - packages and ships proteins






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






36. Matching Chromosomes that are similar but not identical






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






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






39. Production of a chemical compound by a living organism






40. 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






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






42. Vacuole membrane






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






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






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






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






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






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






49. Three-nucleotide sequence on messenger RNA that codes for a single amino acid






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