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






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






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






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






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






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






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






8. The stalk of a stamen that supports the anther






9. Stalk that supports the flower






10. Used to examine tiny cell organelles






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






12. Consists of DNA tightly coiled around proteins






13. A substance that retards or stops enzymatic activity






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






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






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






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






18. Living thing






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






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






21. Matching Chromosomes that are similar but not identical






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






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






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






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






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






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






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






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






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






31. Production of a chemical compound by a living organism






32. Vacuole membrane






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






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






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






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






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






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






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






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






41. Classification of plant which survives only a single season






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






43. Green pigment contained in the grana






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






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






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






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






48. The part of the stamen that contains pollen






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






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