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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. Stores - packages and ships proteins






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






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






4. Change in a DNA sequence that affects genetic information






5. Used to examine tiny cell organelles






6. Cell division which produces two identical cells






7. Living thing






8. A cell having only one complete set of chromosomes






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






10. Area where the chromatids of a chromosome are attached






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






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






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






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






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






16. Projections on cell membrane increase surface area






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






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






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






20. Consists of DNA tightly coiled around proteins






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






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






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






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






25. Smallest unit of most living things






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






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






28. Uses electrons from the Krebs cycle to change ADP to ATP (cytochromes on surface of cristae of mitochondria - contain protein and heme (iron containing) groups - electrons pass along them and ATP is produced)






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






30. Stalk that supports the flower






31. Different forms of a gene






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






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






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






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






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






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






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






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






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






41. The part of the stamen that contains pollen






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






43. Production of a chemical compound by a living organism






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






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






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






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






48. Classification of plant whose life cycle survives two seasons






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






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







Sorry!:) No result found.

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