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. Green pigment contained in the grana






2. Living thing






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






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






5. Used to examine tiny cell organelles






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






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






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






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






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






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






12. Change in a DNA sequence that affects genetic information






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






14. Different forms of a gene






15. Structure within ovary of plant that contains egg cells






16. In photosynthesis - this is the splitting of water by light






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






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






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






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






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






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






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






24. Classification of plant whose life cycle survives two seasons






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






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






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






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






29. The substance acted upon by an enzyme






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






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






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






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






34. Consists of DNA tightly coiled around proteins






35. Projections on cell membrane increase surface area






36. Stalk that supports the flower






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






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






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






40. Vacuole membrane






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






42. Matching Chromosomes that are similar but not identical






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






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






45. A cell having only one complete set of chromosomes






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






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






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






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






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