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






2. 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






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






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






5. Change in a DNA sequence that affects genetic information






6. Structure within ovary of plant that contains egg cells






7. The stalk of a stamen that supports the anther






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






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






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






11. Living thing






12. Plants that grow year after year






13. The part of the stamen that contains pollen






14. Classification of plant whose life cycle survives two seasons






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






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






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






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






19. Classification of plant which survives only a single season






20. Vacuole membrane






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






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






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






24. Stalk that supports the flower






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






26. Smallest unit of most living things






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






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






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






30. Green pigment contained in the grana






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






32. Body of a chloroplast containing grana






33. The substance acted upon by an enzyme






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






35. The complete genetic material contained in an individual






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






37. Used to examine tiny cell organelles






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






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






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






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






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






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






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






45. Stores - packages and ships proteins






46. Formed when cell membrane surrounds a molecule outside the cell and ingests it






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






48. A cell having only one complete set of chromosomes






49. Consists of DNA tightly coiled around proteins






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