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






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






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






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






5. Projections on cell membrane increase surface area






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






7. Structure within ovary of plant that contains egg cells






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






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






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






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






12. Classification of plant whose life cycle survives two seasons






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






14. Used to examine tiny cell organelles






15. Smallest unit of most living things






16. Area where the chromatids of a chromosome are attached






17. Composed of a bilayer of lipids embedded with globular proteins






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






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






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






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






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






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






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






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






26. Green pigment contained in the grana






27. Cell division which produces two identical cells






28. The complete genetic material contained in an individual






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






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






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






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






33. Body of a chloroplast containing grana






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






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






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






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






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






39. The stalk of a stamen that supports the anther






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






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






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






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






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






45. Vacuole membrane






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






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






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






49. The part of the stamen that contains pollen






50. Matching Chromosomes that are similar but not identical