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






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






3. Consists of DNA tightly coiled around proteins






4. In photosynthesis - this is the splitting of water by light






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






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






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






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






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






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






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






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






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






14. Proteins that act as biological catalysts






15. Plants that grow year after year






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






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






18. The substance acted upon by an enzyme






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






20. Vacuole membrane






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






22. The stalk of a stamen that supports the anther






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






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






25. Classification of plant whose life cycle survives two seasons






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






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






28. The complete genetic material contained in an individual






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






30. Area where the chromatids of a chromosome are attached






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






32. A substance that retards or stops enzymatic activity






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






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






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






36. A cell having only one complete set of chromosomes






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






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






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






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






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






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






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






45. Green pigment contained in the grana






46. Smallest unit of most living things






47. Cell division which produces two identical cells






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






49. Used to examine tiny cell organelles






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