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






2. Used to examine tiny cell organelles






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






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






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






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






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






8. Vacuole membrane






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






10. Cell division which produces two identical cells






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






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






13. Consists of DNA tightly coiled around proteins






14. Smallest unit of most living things






15. Proteins that act as biological catalysts






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






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






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






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






20. Stalk that supports the flower






21. Classification of plant whose life cycle survives two seasons






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






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






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






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






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






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






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






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






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






31. Green pigment contained in the grana






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






33. Production of a chemical compound by a living organism






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






35. A cell having only one complete set of chromosomes






36. Classification of plant which survives only a single season






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






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






39. Living thing






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






41. Structure within ovary of plant that contains egg cells






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






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






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






45. The part of the stamen that contains pollen






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






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






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






49. Uses electrons from the Krebs cycle to change ADP to ATP (cytochromes on surface of cristae of mitochondria - contain protein and heme (iron containing) groups - electrons pass along them and ATP is produced)






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