Test your basic knowledge |

MCAT Biology 3

Subjects : mcat, 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. Level of protein structure that is formed by the hydrogen bonds between the polar side groups of the main chain






2. Archaebacteria that live in extermely hot environments - such as hydrothermal vents under the ocean






3. Adenine --- Thymine (DNA) - Adenine --- Uracil (RNA) - Guanine --- Cytosine






4. A special motor protein that moves along the microtubule toward the negative end; responsible for rentrograde axoplasmic transport






5. Cysteine - Methionine - Proline






6. Proteins that are anchored in and pass through the plasma membrane; attached to the cytoskeleton on the interior and to the ECM on the exterior






7. Methane - producing archaebacteria - one of the most primitive archaebacteria that are alive today






8. They connect the plasma membranes of adjacent cells in a sheet - preventing molecules from leaking between the cells.






9. A glucose ring formed with the hydroxyl group in the same plane as the methanol group






10. Large (relative to pyrimidines) double ringed molecules that are found in both DNA and RNA






11. Ancient prokaryotes that survive in extreme anaerobic conditions - such as deap sea vents; they lack peptidoglycan in their cell walls






12. Responsible for moving organelles within a cell - also facilitate cell movement






13. The sugar in RNA contains an extra hydroxyl group and RNA uses uracil instead of thymine






14. The unfolding of a protein caused by a shift in pH - ion concentration - or temperature.






15. Alanine - Valine - Leucine - Isoleucine






16. Two scientists attempted to reproduce the condition of the (assumed) earth's primitive ocean's under a reducing atmosphere. They produced some of the key molecules to life (amino acids and nucleotides).






17. Manner in which macromolecules are broken down -- water is separated into H and OH






18. In prokaryotes - most of the genetic material lies in a single circular molecule of DNA that typically resides near the cetner of the cell. In eukaryotes - DNA is contained in the nucleus - which is surrounded by the nuclear envelope.






19. The bond between the hydroxyl group of one nucleotide and the phosphate group of another.






20. Simple sugars are turned into disaccharides so they can be transported without being metabolized (typically in plants). The enzymes that can break the bond and utilize the sugar are typically present only where the glucose is to be used.






21. A modified form of cellulose with a nitrogen group added to the glucose units; structural building material found in arthropods and cell walls of many fungi.






22. (CH2O)n - n = number of carbon atoms






23. Simple sugars; may be as few as three carbon atoms; those used in energy storage are 6 carbon chains that form rings in solution






24. The exact sequence of amino acids specified by DNA






25. A cluster in the nucleus of ribosomal RNA genes - ribosomal proteins - and the RNAs they produce: it is the site of mass ribosome production






26. Energy cannot be created or destroyed






27. A sticky substance that acts as a glue between the primary cell walls of plant cells






28. 7 pass transmembrane protein in bacteria that carries out photosynthesis






29. Function section of a protein that is able to fold independently of the other sections - encoded by exons (functional sections of a gene)






30. The connection beteween two plasma membranes of plant cells






31. Long - threadlike structures protruding from the surface of a cell that are used for locomotion






32. The second major group of prokaryotes that have very strong cell walls and are photosynthetic






33. The final folded shape of a globular protein -- positions folds nonpolar side groups within the interior






34. A lipid that is composed of 4 fused carbon rings - commonly found in cell membranes.






35. A common feature of porin proteins; beta sheets that forma characteristic motif where the sheets form a barrel - like structure






36. A type of intermediate filament found in epithelial cells






37. The manner in which all macromolecules are assembled -- water is a product of the reaction






38. A type of anchoring junction that connects the cytoskeletons of adjacent cells






39. Proteins that help another protein fold properly; elevated levels of this protein are found when the cell is exposed to elevated temperatures






40. A three carbon alcohol in which each carbon is attached to a hydroxyl group






41. Consist of a central carbon bound to an amino group - a carboxylic acid - a hydrogen atom - and an R group






42. Glycine - Serine - Threonine - Asparagine - Glutamine






43. Phenyalanine - Tryptophan - Tyrosine






44. Glycerol attached to 3 fatty acids. Also called triglyceride or triacylglycerol






45. A semi - fluid matrix that fills the interior of the cell






46. The bond between two amino acids. Non - rotational because it has partial double - bond characteristics






47. The most stable and durable element of cytoskeletal structure; includes vimentin - keratin - and neurofilaments






48. Mechanically attach the cytoskeleton of a cell to the cytoskeletons of other cells or to the extracellular matrix. Common in tissues experiencing mechanical stress - eg muscle and skin epithelium






49. Most abundant protein found in vertebrate body; forms matrix of skin - ligaments - tendons - and bones; found in the ECM






50. The animal version of starch. An insoluble polysaccharide containing branched amylose chaings. (chain length is much greater than starch and there are more branches)






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