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






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






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






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






5. The stalk of a stamen that supports the anther






6. Different forms of a gene






7. Smallest unit of most living things






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






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






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






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






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






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






14. Living thing






15. Green pigment contained in the grana






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






17. Stage of cellular respiration that finishes the breakdown of pyruvic acid molecules to carbon dioxide - releasing energy






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






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






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






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






22. Classification of plant whose life cycle survives two seasons






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






24. A cell having only one complete set of chromosomes






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






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






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






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






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






30. Stalk that supports the flower






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






32. Vacuole membrane






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






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






35. Plants that grow year after year






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






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






38. The part of the stamen that contains pollen






39. 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)






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






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






42. Change in a DNA sequence that affects genetic information






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






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






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






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






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






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






49. The regular sequence of growth and division that cells undergo






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