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






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






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






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






5. Smallest unit of most living things






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






7. Different forms of a gene






8. Consists of DNA tightly coiled around proteins






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






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






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






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






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






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






15. Green pigment contained in the grana






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






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






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






19. The stalk of a stamen that supports the anther






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






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






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






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






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






25. The complete genetic material contained in an individual






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






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






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






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






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






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






32. Matching Chromosomes that are similar but not identical






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






34. Classification of plant whose life cycle survives two seasons






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






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






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






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






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






40. A cell having only one complete set of chromosomes






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






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






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






44. Production of a chemical compound by a living organism






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






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






47. The part of the stamen that contains pollen






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






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






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