Test your basic knowledge |

MCAT Biology 2

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. Gel consisting of a network of insoluble protein fibers






2. Induces contraction of the uterine muscles during childbirth and causes the mammary glands to eject milk during nursing






3. Hemolytic disease in the newborn caused by a blood groop (Rh factor) incompatibility between the mother and the fetus






4. Luteinizing hormone - ovulation and egg release - maturation of egg - release of testosterone in males.






5. Inner fluid filled space in the blastocyst - The fluid - filled cavity that forms in the center of the blastula embryo.






6. Part of the Loop of Henle that removes Sodium from the blood. - Reabsorption of ions; creates the concentration gradient in the medulla - enabling the kidney to produce concentrated urine






7. An enzyme that catalyzes the hydrolysis of sucrose into glucose and fructose






8. Cortisol and Cortisone are types of these hormones - produced in the Adrenal cortex - which increase blood glucose levels through stimulation of gluconeogenesis and the decrease of protein synthesis. They also reduce the body's immunological and infl






9. Located in the center of the brain - functioning to secrete melatonin and serotonin






10. One of the two glands in the male reproductive system that add fluid to the semen during ejaculation






11. Stage of the cell cycle when a cell is actively dividing - the part of the cell cycle when mitosis divides the nucleus and distributes its chromosomes to the daughter nuclei and cytokinesis divides the cytoplasm - producing two daughter cells.






12. The organic process in which the substance of some differentiated structure that has been produced by the body undergoes lysis and assimilation






13. Shaft or middle region of long bone that contains layer of spongy bone






14. 30 different nucleoporins bind together and form the a passage out of the nucleus. Nuclear fibers increase selectivity.






15. First section of the renal tubule that the blood flows through; reabsorption of water - ions - and all organic nutrients






16. Amino acids that an animal cannot synthesize itself and must be obtained from food. Eight of these are essential in the human adult.






17. The cytoplasm of a striated muscle fiber






18. Comes in at a site other than active site but alters shape of enzyme so it can no longer bind reactants






19. Have cell walls - a cell membrane - cytoplasm - ribosomes - and sometimes flagella. Also respiration occurs at the cell emebrane.






20. Any of the many tiny canals that contain blood vessels and connective tissue and that form a network in bone






21. All multicellular and unicellular nonbacteria organisms. Is bounded by a cell membrane and contains cytoplasm. cytoplasm contains organellessuspended in a semifluid mediumcalled cytosol. The genetic material consists of linear strands of DNA organize






22. Small rings of DNA consisting of a few genes. They replicate independently of the main chromosome and often contain genes that allow the cell to survive adverse conditions






23. Serves the circulatory needs of the anterior pituitary. The release of anterior pituitary hormones is controlled by neurosecretions produced by neurons of the ventral hypothalamus.






24. Cylinder oriented parallel to long axis of bone; within each cylinder is tubes (concentric circles) of bone matrix (lamellae)






25. The thin - moist part of an animal where oxygen from the environment diffuses into living cells and carbon dioxide diffuses out to the surrounding environment - must be in contact with an environmental source of oxygen and must be large enough to tak






26. A skeletal muscle whose contraction bends a joint






27. A physiologically inactive form of angiotensin that is the precursor to angiotensin II. ACE will convert it from I to 2.






28. The fourth and final phase of meiosis II. Telophase II is identical to mitotic telophase - except that the number of chromosomes was reduced by half during meiosis. I.






29. An aggregation of several ribosomes attached to one messenger RNA molecule.






30. A process for synthesizing ATP using the energy of an electrochemical gradient and the ATP synthase enzyme.






31. Most superficial - 'horn - like' cornified or keratinized - 15-30 layers flat and dead - 15-30 days from stratum basale then 10-14 days until lost - tightly connected






32. Micorsopic - fiber - like structures that occupy most cytoplasm in skeletal muscle cells






33. The extracellular signaling molecule that binds to the membrane receptor






34. Tiny passageways interconnecting the lacunae/osteocytes with the blood vessels - nerves - etc. in the Haversain Canal of an Haversian System






35. The loss of electrons from a substance involved in a redox reaction.






36. Abnormally high blood sugar usually associated with diabetes






37. The exterior protective or supporting structure or shell of many animals (especially invertebrates) including bony or horny parts such as nails or scales or hoofs






38. Is a swelling of the axial terminal - The presynaptic swelling of the axon terminal From which neural messages travel across synaptic cleft to other neurons






39. Amount of air that can be forcefully exhaled after a normal tidal volume exhalation






40. These are absorbed by the intestinal wall cells and are made up of fatty acids and monoacylglycerols. - formed when amphipathic molecules are mixed with water - polar regions on outside - non polar regions on inside






41. A group of bioactive - hormone - like chemicals derived from fatty acids that have a wide variety of biological effects including roles in inflammation - platelet aggregation - vascular smooth muscle dilation and constriction - cell growth - protecti






42. An iron - containing protein that is a component of electron transport chains in the mitochondria and chloroplasts of eukaryotic cells and the plasma membranes of prokaryotic cells. Examples are hgb and the ones involved in the ETC in the inner membr






43. The four chromatids in a pair of homologous chromosomes that come together as a result of synapsis during meiosis






44. Substances formed by the joining of elements through chemical bonding. every molecule of a compound is the same.






45. An immunity resulting from antibodies that are conveyed naturally through the placenta to a fetus or artificially by injection of a serum containing antibodies






46. Series of events that cells go through as they grow and divide






47. Boundaries of the sarcomere which give skeletal muscle its striated appearance






48. Semifluid medium containing organelles.






49. A type of lipid characterized by a carbon skeleton consisting of four rings with various functional groups attached.






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