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. 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.






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






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






4. Glutamic acid - Aspartic acid - Histidine - Lysine - Argenine






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






6. Phenyalanine - Tryptophan - Tyrosine






7. Glycoproteins that forms a complex web that forms a protective layer of the surface of animal cells






8. A carrier protein that simultaneously moves one molecule in as it moves another out






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






10. A hydrocarbon chain that terminates with a carboxyl group.






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






12. Alanine - Valine - Leucine - Isoleucine






13. Proteins - lipids - carbohydrates - nucleic acids






14. Destroys gram - positive bacteria by interfering with peptidoglycan's ability to cross - link the peptides which hold together the carbohydrates that make up the cell wall; water floods bacterial cell and causes it to burst






15. A combination of secondary structure bonding that forms characteristic patterns within protein strucure - such as the alpha - helix and the beta - pleated sheet






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






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






18. Protein that plays a major role in vesicle formation during receptor mediated endocytosis; forms a coated pit on the plasma membrane






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






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






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






22. A structure that some fully expanded plant cells produce; provides very strong structural support






23. 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).






24. A structural starch that is a string of beta glucose molecules; it is the chief structural component of plant cell walls. Starch - degrading enzymes that occur in most organisms cannot break the bond between two beta - glucose molecules.






25. Most common atoms found in biological molecules






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






27. Nonpolar - polar uncharged - charged - aromatic (nonpolar and polar uncharged) - special function






28. Chlorophyll containing bacteria that played an important role in increasing the concentration of oxygen






29. Glycerol attached to a phosphate group and two fatty acid chains






30. A form of endocytosis where an animal cell engulfs liquid matter






31. Cysteine - Methionine - Proline






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






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






34. 7 pass transmembrane protein in bacteria that carries out photosynthesis






35. Adenine and Guanine






36. A type of intermediate filament found in epithelial cells






37. Level of protein structure that is formed by the hydrogen bonds between the polar side groups of the main chain






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






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






40. A cellular structure that aids in the assembly of microtubules; lacking in cells of plants and fungi






41. The connection beteween two plasma membranes of plant cells






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






43. 1 joule = 0.239 calories






44. Archaebacteria that live in very salty environments - such as the Dead Sea






45. Laid down when a plant cell is still growing; composed of chitin in fungi and cellulose in plants and protists






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






47. Energy cannot be created or destroyed






48. A protein cross - linked carbohydrate that is a key compound in the cell walls of most modern prokaryotes (bacteria)






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






50. 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







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