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






2. Used to examine tiny cell organelles






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






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






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






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






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






8. Smallest unit of most living things






9. Vacuole membrane






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






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






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






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






14. Plants that grow year after year






15. Consists of DNA tightly coiled around proteins






16. Area where the chromatids of a chromosome are attached






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






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






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






20. Body of a chloroplast containing grana






21. Living thing






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






23. The part of the stamen that contains pollen






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






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






26. A cell having only one complete set of chromosomes






27. Matching Chromosomes that are similar but not identical






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






29. The complete genetic material contained in an individual






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






31. Structure within ovary of plant that contains egg cells






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






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






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






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






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






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






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






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






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






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






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






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






46. Cell division which produces two identical cells






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






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






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






50. Proteins that act as biological catalysts