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






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






3. The complete genetic material contained in an individual






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






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






6. Proteins that act as biological catalysts






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






8. The first stage of mitosis - forming spindle fibres attached to the centromere






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






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






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






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






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






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






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






16. Smallest unit of most living things






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






18. Structure within ovary of plant that contains egg cells






19. The part of the stamen that contains pollen






20. Used to examine tiny cell organelles






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






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






23. Area where the chromatids of a chromosome are attached






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






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






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






27. Stalk that supports the flower






28. Projections on cell membrane increase surface area






29. Matching Chromosomes that are similar but not identical






30. Vacuole membrane






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






32. Green pigment contained in the grana






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






34. Production of a chemical compound by a living organism






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






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






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






38. Change in a DNA sequence that affects genetic information






39. Classification of plant whose life cycle survives two seasons






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






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






42. Sequence of DNA that codes for a protein and thus determines a trait






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






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






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






46. Anaerobic cellular respiration in which pyruvic acid is broken down into end products such as lactic acid






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






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






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






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