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






2. Proteins that act as biological catalysts






3. Different forms of a gene






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






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






6. The process of transfering genetic material from one cell to another






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






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






9. The part of the stamen that contains pollen






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






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






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






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






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






15. Stores - packages and ships proteins






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






17. Projections on cell membrane increase surface area






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






19. A substance that retards or stops enzymatic activity






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






21. The complete genetic material contained in an individual






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






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






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






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






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






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






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






30. Living thing






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






32. Matching Chromosomes that are similar but not identical






33. The stalk of a stamen that supports the anther






34. Smallest unit of most living things






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






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






37. Green pigment contained in the grana






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






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






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






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






42. Production of a chemical compound by a living organism






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






44. Consists of DNA tightly coiled around proteins






45. Classification of plant whose life cycle survives two seasons






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






47. Change in a DNA sequence that affects genetic information






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






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






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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