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






2. Structure within ovary of plant that contains egg cells






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






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






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






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






7. The stalk of a stamen that supports the anther






8. Projections on cell membrane increase surface area






9. Smallest unit of most living things






10. Living thing






11. Plants that grow year after year






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






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






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






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






16. Vacuole membrane






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






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






19. Consists of DNA tightly coiled around proteins






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






21. Stalk that supports the flower






22. A cell having only one complete set of chromosomes






23. Change in a DNA sequence that affects genetic information






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






25. Production of a chemical compound by a living organism






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






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






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






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






30. Proteins that act as biological catalysts






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






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






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






34. Matching Chromosomes that are similar but not identical






35. Body of a chloroplast containing grana






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






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






38. Area where the chromatids of a chromosome are attached






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






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






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






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






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






44. A substance that retards or stops enzymatic activity






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






46. The part of the stamen that contains pollen






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






48. Different forms of a gene






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






50. The substance acted upon by an enzyme