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






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






3. Cell division which produces two identical cells






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






5. Area where the chromatids of a chromosome are attached






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






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






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






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






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






11. A cell having only one complete set of chromosomes






12. Projections on cell membrane increase surface area






13. A substance that retards or stops enzymatic activity






14. Cell organelle filled with enyzmes need to break down certain materials in the cells






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






16. Classification of plant which survives only a single season






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






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






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






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






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






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






23. Plants that grow year after year






24. Vacuole membrane






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






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






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






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






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






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






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






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






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






34. The part of the stamen that contains pollen






35. Production of a chemical compound by a living organism






36. Different forms of a gene






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






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






39. The complete genetic material contained in an individual






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






41. Living thing






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






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






44. Classification of plant whose life cycle survives two seasons






45. Structure within ovary of plant that contains egg cells






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






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






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






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






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