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






2. The part of the stamen that contains pollen






3. A substance that retards or stops enzymatic activity






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






5. 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)






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






7. Body of a chloroplast containing grana






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






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






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






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






12. Classification of plant whose life cycle survives two seasons






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






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






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






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






17. Projections on cell membrane increase surface area






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






19. Used to examine tiny cell organelles






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






21. The complete genetic material contained in an individual






22. Proteins that act as biological catalysts






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






24. Structure within ovary of plant that contains egg cells






25. Particle made up of DNA - RNA - protein - and in some cases lipids that can only replicate only by infecting living cells






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






42. Smallest unit of most living things






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






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






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






46. Green pigment contained in the grana






47. Different forms of a gene






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






49. Area where the chromatids of a chromosome are attached






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







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


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