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. The complete genetic material contained in an individual






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






3. The part of the stamen that contains pollen






4. Cell division which produces two identical cells






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






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






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






8. 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






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






10. Body of a chloroplast containing grana






11. Structure within ovary of plant that contains egg cells






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






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






14. Stalk that supports the flower






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






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






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






18. 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)






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






20. Area where the chromatids of a chromosome are attached






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






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






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






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






25. A substance that retards or stops enzymatic activity






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






27. Vacuole membrane






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






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






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






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






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






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






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






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






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






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






38. The stalk of a stamen that supports the anther






39. Projections on cell membrane increase surface area






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






41. The substance acted upon by an enzyme






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






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






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






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






46. Used to examine tiny cell organelles






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






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






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






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