Test your basic knowledge |

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






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






3. The complete genetic material contained in an individual






4. Cell division which produces two identical cells






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






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






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






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






9. Smallest unit of most living things






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






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






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






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






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






15. A substance that retards or stops enzymatic activity






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






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






18. 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






19. Projections on cell membrane increase surface area






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






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






22. Stalk that supports the flower






23. Classification of plant whose life cycle survives two seasons






24. Structure within ovary of plant that contains egg cells






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






26. The part of the stamen that contains pollen






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






28. A cell having only one complete set of chromosomes






29. Used to examine tiny cell organelles






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






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






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






33. Matching Chromosomes that are similar but not identical






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






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






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






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






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






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






40. Production of a chemical compound by a living organism






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






42. Body of a chloroplast containing grana






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






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






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






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






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






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






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






50. Reducing the ploidy level of nucleus from diploid to haploid in meiotic cell division