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






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






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






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






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






6. Consists of DNA tightly coiled around proteins






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






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






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






10. Classification of plant which survives only a single season






11. Reproductive cells - have only half the number of chromosomes






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






13. 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)






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






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






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






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






18. Cells that lack a membrane-bound nucleus and membrane-bound organelles






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






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






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






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






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






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






25. Green pigment contained in the grana






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






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






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






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






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






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






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






33. Projections on cell membrane increase surface area






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






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






36. Body of a chloroplast containing grana






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






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






39. The stalk of a stamen that supports the anther






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






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






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






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






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






45. Different forms of a gene






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






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






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






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






50. Change in a DNA sequence that affects genetic information







Sorry!:) No result found.

Can you answer 50 questions in 15 minutes?


Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests



Major Subjects

Tests & Exams


AP
CLEP
DSST
GRE
SAT
GMAT

Browse all subjects

Browse all tests

Most popular tests