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






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






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






4. Matching Chromosomes that are similar but not identical






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






6. The stalk of a stamen that supports the anther






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






8. Cell division which produces two identical cells






9. Plants that grow year after year






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






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






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






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






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






15. Living thing






16. Modifications of pre-mRNA that make it into mature mRNA - so that it is ready for protein synthesis






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






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






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






20. 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






21. Provides structural support to a cell composed of microtubules - microfilaments - centrioles






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






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






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






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






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






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






28. Proteins that act as biological catalysts






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






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






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






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






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






34. A period during which the cell grows - G1 - copies its DNA - S - and synthesizes proteins - G2






35. Two identical chromosomes that split and contain the same genetic material






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






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






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






39. The complete genetic material contained in an individual






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






41. Production of a chemical compound by a living organism






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






43. Different forms of a gene






44. Classification of plant whose life cycle survives two seasons






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






46. Vacuole membrane






47. Green pigment contained in the grana






48. The substance acted upon by an enzyme






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






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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