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






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






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






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






5. Matching Chromosomes that are similar but not identical






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






7. 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






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






9. Stalk that supports the flower






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






11. Classification of plant whose life cycle survives two seasons






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






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






14. A substance that retards or stops enzymatic activity






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






16. Different forms of a gene






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






18. Proteins that act as biological catalysts






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






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






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






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






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






24. Classification of plant which survives only a single season






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






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






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






28. Production of a chemical compound by a living organism






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






30. Smallest unit of most living things






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






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






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






34. Body of a chloroplast containing grana






35. The stalk of a stamen that supports the anther






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






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






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






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






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






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






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






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






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






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






46. Stores - packages and ships proteins






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






48. Living thing






49. A cell having only one complete set of chromosomes






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