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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 process of transfering genetic material from one cell to another






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






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






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






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






6. An internal membrane system in which components of cell membrane and some proteins are constructed. rough - instrumental in protein synthesis; smooth - processes lipids fats and steroids






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






8. The complete genetic material contained in an individual






9. A substance that retards or stops enzymatic activity






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






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






12. A cell having only one complete set of chromosomes






13. Different forms of a gene






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






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






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






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






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






19. Stores - packages and ships proteins






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






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






22. The stalk of a stamen that supports the anther






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






24. Change in a DNA sequence that affects genetic information






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






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






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






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






29. Smallest unit of most living things






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






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






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






33. Body of a chloroplast containing grana






34. Matching Chromosomes that are similar but not identical






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






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






37. Production of a chemical compound by a living organism






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






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






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






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






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






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






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






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






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






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






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






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






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







Sorry!:) No result found.

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