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






3. Classification of plant which survives only a single season






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






5. (adenosine triphosphate) main energy source that cells use for most of their work






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






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






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






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






10. The substance acted upon by an enzyme






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






12. 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






13. A cell having only one complete set of chromosomes






14. Passive transport of materials across a plasma membrane by transport proteins embedded in the plasma membrane






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






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






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






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






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






20. Smallest unit of most living things






21. Provides structural support to a cell composed of microtubules - microfilaments - centrioles






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






23. Change in a DNA sequence that affects genetic information






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






25. A non-protein - but organic - molecule (such as vitamin) that is covalently bound to an enzyme as part of the active site






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






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






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






29. Area where the chromatids of a chromosome are attached






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






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






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






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






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






35. Classification of plant whose life cycle survives two seasons






36. Stalk that supports the flower






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






38. The part of the stamen that contains pollen






39. Living thing






40. Cell division which produces two identical cells






41. Stores - packages and ships proteins






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






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






44. Production of a chemical compound by a living organism






45. Proteins that act as biological catalysts






46. Green pigment contained in the grana






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






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






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






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