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 process of transfering genetic material from one cell to another






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






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






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






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






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






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






8. Plants that grow year after year






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






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






11. Classification of plant which survives only a single season






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






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






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






15. The complete genetic material contained in an individual






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






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






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






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






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






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






22. A cell having only one complete set of chromosomes






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






24. A substance that retards or stops enzymatic activity






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






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






27. Vacuole membrane






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






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






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






31. 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






32. Living thing






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






34. Green pigment contained in the grana






35. Photosynthetic reaction in which carbon dioxide is attached to an organic compound (glucose - polysaccharides)






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






37. Projections on cell membrane increase surface area






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






39. Area where the chromatids of a chromosome are attached






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






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






42. The stalk of a stamen that supports the anther






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






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






45. Proteins that act as biological catalysts






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






47. Consists of DNA tightly coiled around proteins






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






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






50. Different forms of a gene