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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. Stalk that supports the flower






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






3. Stores - packages and ships proteins






4. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration






5. Disk-like plates which are the site of photosynthesis in chloroplasts






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






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






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






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






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






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






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






13. Used to examine tiny cell organelles






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






15. 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)






16. A cell having only one complete set of chromosomes






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






18. The stalk of a stamen that supports the anther






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






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






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






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






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






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






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






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






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






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






29. Structure within ovary of plant that contains egg cells






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






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






32. Plants that grow year after year






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






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






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






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






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






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






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






40. Living thing






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






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






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






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






45. Green pigment contained in the grana






46. Production of a chemical compound by a living organism






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






48. Proteins that act as biological catalysts






49. 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






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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