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






2. Body of a chloroplast containing grana






3. The stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle






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






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






6. The stalk of a stamen that supports the anther






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






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






9. Green pigment contained in the grana






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






11. Area where the chromatids of a chromosome are attached






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






13. Living thing






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






15. Consists of DNA tightly coiled around proteins






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






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






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






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






20. The complete genetic material contained in an individual






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






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






23. Classification of plant which survives only a single season






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






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






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






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






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






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






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






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






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






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






34. Stalk that supports the flower






35. Change in a DNA sequence that affects genetic information






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






37. Production of a chemical compound by a living organism






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






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






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






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






42. Numerous folds in the inner membrane of a mitochondrion - the site of cellular respiration






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






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






45. A cell having only one complete set of chromosomes






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






47. Cell division which produces two identical cells






48. Used to examine tiny cell organelles






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






50. Structure within ovary of plant that contains egg cells