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






2. Body of a chloroplast containing grana






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






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






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






6. Smallest unit of most living things






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






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






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






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






11. Classification of plant whose life cycle survives two seasons






12. A cell having only one complete set of chromosomes






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






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






15. Cell division which produces two identical cells






16. Living thing






17. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis






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






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






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






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






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






23. Production of a chemical compound by a living organism






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






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






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






27. A substance that retards or stops enzymatic activity






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






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






30. Consists of DNA tightly coiled around proteins






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






32. The stalk of a stamen that supports the anther






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






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






35. Plants that grow year after year






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






37. Green pigment contained in the grana






38. Used to examine tiny cell organelles






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






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






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






42. Stalk that supports the flower






43. The part of the stamen that contains pollen






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






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






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






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






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






49. Vacuole membrane






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