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






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






3. Smallest unit of most living things






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






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






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






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






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






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






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






11. Plants that grow year after year






12. A cell having only one complete set of chromosomes






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






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






15. Different forms of a gene






16. Living thing






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






18. The stalk of a stamen that supports the anther






19. 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






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






21. Green pigment contained in the grana






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






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






24. 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)






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






26. Change in a DNA sequence that affects genetic information






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






28. The complete genetic material contained in an individual






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






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






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






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






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






34. Consists of DNA tightly coiled around proteins






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






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






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






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






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






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






41. A substance that retards or stops enzymatic activity






42. Structure within ovary of plant that contains egg cells






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






44. Cell division which produces two identical cells






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






46. Production of a chemical compound by a living organism






47. Body of a chloroplast containing grana






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






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






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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