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






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






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






4. Plants that grow year after year






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






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






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






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






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






10. Green pigment contained in the grana






11. Classification of plant whose life cycle survives two seasons






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






13. Used to examine tiny cell organelles






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






15. Area where the chromatids of a chromosome are attached






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






17. Projections on cell membrane increase surface area






18. Classification of plant which survives only a single season






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






20. A substance that retards or stops enzymatic activity






21. The substance acted upon by an enzyme






22. Vacuole membrane






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






24. Living thing






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






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






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






28. Matching Chromosomes that are similar but not identical






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






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






31. 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)






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






33. Change in a DNA sequence that affects genetic information






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






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






36. Cell division which produces two identical cells






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






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






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






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






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






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






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






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






45. The part of the stamen that contains pollen






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






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






48. The male reproductive organ of a flower consisting of anther - filament - and pollen






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






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