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






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






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






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






5. The stalk of a stamen that supports the anther






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






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






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






9. Area where the chromatids of a chromosome are attached






10. The substance acted upon by an enzyme






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






12. Matching Chromosomes that are similar but not identical






13. Living thing






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






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






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






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






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






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






20. Different forms of a gene






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






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






24. Classification of plant whose life cycle survives two seasons






25. Smallest unit of most living things






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






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






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






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






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






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






32. Consists of DNA tightly coiled around proteins






33. Plants that grow year after year






34. Cell division which produces two identical cells






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






36. Change in a DNA sequence that affects genetic information






37. Stores - packages and ships proteins






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






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






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






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






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






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






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






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






46. Projections on cell membrane increase surface area






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






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






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






50. 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