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. Stalk that supports the flower






2. Area where the chromatids of a chromosome are attached






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






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






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






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






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






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






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






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






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






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






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






14. Classification of plant whose life cycle survives two seasons






15. Smallest unit of most living things






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






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






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






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






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






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






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






23. Vacuole membrane






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






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






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






27. Plants that grow year after year






28. Used to examine tiny cell organelles






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






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






31. A substance that retards or stops enzymatic activity






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






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






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






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






36. A cell having only one complete set of chromosomes






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






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






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






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






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






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






43. Different forms of a gene






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






45. Matching Chromosomes that are similar but not identical






46. The stalk of a stamen that supports the anther






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






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






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






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