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






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






3. 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






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






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






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






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






8. Green pigment contained in the grana






9. Vacuole membrane






10. Theory which suggests mitochondria and chloroplasts were once prokaryotic organisms in a symbiotic relationship with eykorytic cells






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






12. Projections on cell membrane increase surface area






13. A cell having only one complete set of chromosomes






14. Change in a DNA sequence that affects genetic information






15. The complete genetic material contained in an individual






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






17. Proteins that act as biological catalysts






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






19. A substance that retards or stops enzymatic activity






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






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






22. Consists of DNA tightly coiled around proteins






23. Smallest unit of most living things






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






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






26. Stalk that supports the flower






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






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






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






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






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






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






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






34. 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)






35. Matching Chromosomes that are similar but not identical






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






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






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






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






40. The stalk of a stamen that supports the anther






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






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






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






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






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






46. Cell division which produces two identical cells






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






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






49. Body of a chloroplast containing grana






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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