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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. Classification of plant whose life cycle survives two seasons






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






3. The substance acted upon by an enzyme






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






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






6. Reproductive cells - have only half the number of chromosomes






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






8. Area where the chromatids of a chromosome are attached






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






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






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






12. 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)






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






14. Three-nucleotide sequence on messenger RNA that codes for a single amino acid






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






16. Cell division that produces reproductive cells in sexually reproducing organisms






17. Change in a DNA sequence that affects genetic information






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






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






20. Proteins that act as biological catalysts






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






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






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






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






25. Cell division which produces two identical cells






26. Matching Chromosomes that are similar but not identical






27. 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






28. Structure within ovary of plant that contains egg cells






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






30. Classification of plant which survives only a single season






31. Different forms of a gene






32. Body of a chloroplast containing grana






33. Production of a chemical compound by a living organism






34. A cell having only one complete set of chromosomes






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






36. Stalk that supports the flower






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






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






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






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






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






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






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






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






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






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






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






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






49. The part of the stamen that contains pollen






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






Can you answer 50 questions in 15 minutes?



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