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






2. Smallest unit of most living things






3. Production of a chemical compound by a living organism






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






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






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






7. Change in a DNA sequence that affects genetic information






8. Stores - packages and ships proteins






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






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






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






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






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






14. The substance acted upon by an enzyme






15. Matching Chromosomes that are similar but not identical






16. The part of the stamen that contains pollen






17. A cell having only one complete set of chromosomes






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






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






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






21. Different forms of a gene






22. Vacuole membrane






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






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






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






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






27. Living thing






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






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






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






31. The complete genetic material contained in an individual






32. Structure within ovary of plant that contains egg cells






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






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






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






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






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






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






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






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






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






42. Classification of plant which survives only a single season






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






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






45. Stalk that supports the flower






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






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






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






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






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