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 survives only a single season






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






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






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






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






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






7. The part of the stamen that contains pollen






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






9. 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)






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






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






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






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






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






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






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






17. Different forms of a gene






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






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






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






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






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






23. Consists of DNA tightly coiled around proteins






24. Stalk that supports the flower






25. Green pigment contained in the grana






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






27. Structure within ovary of plant that contains egg cells






28. Living thing






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






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






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






32. A substance that retards or stops enzymatic activity






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






34. Stores - packages and ships proteins






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






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






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






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






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






40. Process of building up complex materials (proteins) from simple materials






41. A cell having only one complete set of chromosomes






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






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






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






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






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






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






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






49. The complete genetic material contained in an individual






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