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






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






3. The part of the stamen that contains pollen






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






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






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






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






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






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






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






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






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






13. The stalk of a stamen that supports the anther






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






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






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






17. Stores - packages and ships proteins






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






19. Classification of plant which survives only a single season






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






21. A substance that retards or stops enzymatic activity






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






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






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






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






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






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






28. A cell having only one complete set of chromosomes






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






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






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






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






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






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






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






36. Green pigment contained in the grana






37. Proteins that act as biological catalysts






38. Production of a chemical compound by a living organism






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






40. Projections on cell membrane increase surface area






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






42. Living thing






43. Matching Chromosomes that are similar but not identical






44. 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






45. Body of a chloroplast containing grana






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






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






48. Classification of plant whose life cycle survives two seasons






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






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