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






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






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






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






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






6. Plants that grow year after year






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






8. Proteins that act as biological catalysts






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






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






11. Change in a DNA sequence that affects genetic information






12. Classification of plant whose life cycle survives two seasons






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






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






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






16. A cell having only one complete set of chromosomes






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






18. Used to examine tiny cell organelles






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






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






21. Production of a chemical compound by a living organism






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






23. Consists of DNA tightly coiled around proteins






24. Vacuole membrane






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






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






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






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






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






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






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. The complete genetic material contained in an individual






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






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






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






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






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






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






39. Different forms of a gene






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






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






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






43. Green pigment contained in the grana






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






45. Area where the chromatids of a chromosome are attached






46. Stores - packages and ships proteins






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






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






49. 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)






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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