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






2. Breakdown of more complex substances into simpler ones with release of energy






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






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






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






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






7. Used to examine tiny cell organelles






8. The substance acted upon by an enzyme






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






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






11. Proteins that act as biological catalysts






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






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






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






15. Production of a chemical compound by a living organism






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






17. Change in a DNA sequence that affects genetic information






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






19. 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






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






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






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






23. Plants that grow year after year






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






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






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






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






28. Classification of plant which survives only a single season






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






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






31. Living thing






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






33. Smallest unit of most living things






34. Matching Chromosomes that are similar but not identical






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






36. A cell having only one complete set of chromosomes






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






38. Uses electrons from the Krebs cycle to change ADP to ATP (cytochromes on surface of cristae of mitochondria - contain protein and heme (iron containing) groups - electrons pass along them and ATP is produced)






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






40. Projections on cell membrane increase surface area






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






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






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






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






45. Classification of plant whose life cycle survives two seasons






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






47. Green pigment contained in the grana






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






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






50. Different forms of a gene







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