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 female part of a flower composed of ovary and style and stigma and ovules






2. Stalk that supports the flower






3. Tubes - One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope; play a role in cell division.






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






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






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






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






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






9. The complete genetic material contained in an individual






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






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






12. Production of a chemical compound by a living organism






13. Disk-like plates which are the site of photosynthesis in chloroplasts






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






15. Used to examine tiny cell organelles






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






17. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2






18. Provides structural support to a cell composed of microtubules - microfilaments - centrioles






19. Body of a chloroplast containing grana






20. Structure within ovary of plant that contains egg cells






21. A substance that retards or stops enzymatic activity






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






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






24. Area where the chromatids of a chromosome are attached






25. Process of building up complex materials (proteins) from simple materials






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






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






28. Living thing






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






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






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






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






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






34. A cell having only one complete set of chromosomes






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






36. Projections on cell membrane increase surface area






37. Classification of plant which survives only a single season






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






39. Cell division which produces two identical cells






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






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






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






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






44. The stalk of a stamen that supports the anther






45. Stores - packages and ships proteins






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






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






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






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






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