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






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






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






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






5. Structure within ovary of plant that contains egg cells






6. Change in a DNA sequence that affects genetic information






7. Used to examine tiny cell organelles






8. The complete genetic material contained in an individual






9. Different forms of a gene






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






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






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






13. Cell division which produces two identical cells






14. Stalk that supports the flower






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






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






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






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






19. Vacuole membrane






20. Projections on cell membrane increase surface area






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






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






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






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






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






26. Living thing






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






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






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






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






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






32. 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






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






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






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






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






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






38. Production of a chemical compound by a living organism






39. The part of the stamen that contains pollen






40. The stalk of a stamen that supports the anther






41. Stores - packages and ships proteins






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






43. The second phase of mitosis - during which the chromosomes line up across the center of the cell






44. Smallest unit of most living things






45. Body of a chloroplast containing grana






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






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






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






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






50. A cell having only one complete set of chromosomes






Can you answer 50 questions in 15 minutes?



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