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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. Three-nucleotide sequence on messenger RNA that codes for a single amino acid






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






3. Area where the chromatids of a chromosome are attached






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






5. Stores - packages and ships proteins






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






7. The part of the stamen that contains pollen






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






9. Production of a chemical compound by a living organism






10. Body of a chloroplast containing grana






11. The complete genetic material contained in an individual






12. A cell having only one complete set of chromosomes






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






14. Set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes






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






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






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






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






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






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






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






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






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






24. Structure within ovary of plant that contains egg cells






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






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






27. 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






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






29. Classification of plant whose life cycle survives two seasons






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






31. Plants that grow year after year






32. 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)






33. Matching Chromosomes that are similar but not identical






34. Different forms of a gene






35. A substance that retards or stops enzymatic activity






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






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






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






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






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






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






43. Smallest unit of most living things






44. Transport of a substance across a cell membrane against the concentration gradient






45. The substance acted upon by an enzyme






46. Projections on cell membrane increase surface area






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






48. Change in a DNA sequence that affects genetic information






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






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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