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. Attracts a solute molecule to a binding site






2. A capsule partly surrounds a cluster of capillaries (called glomerulus) - blood passes thru the capillaries and is filtered by squeezing the fluid part into the bowmans capsule and on into a tubule - most h2o & other needed substances are reabsorbed






3. Two tiny structures located in the cytoplasm near the nuclear envelope. They direct the seperation of chromosomes during cell division.






4. A specific configuration of atoms commonly attached to the carbon skeletons of organic molecules and usually involved in chemical reactions.






5. The small artery that carries blood toward the capillaries of the glomerulus.






6. Points in which two cells are fastened together into strong sheets. Intermediate filaments anchor these. Also called anchoring junctions.






7. Neurohormone secreted by the heart in response to ventricular expansion. Elevated greater than 100 pg/mL indicates some heart failure






8. This system's funtions are (1) to transport tissue fluid to the blood vessels - and (2) to protect the body by removing foreign material such as bacteria from the lymphatic stream and by serving as a cite for lymphocytes 'policing of body fluids and






9. The outermost of the three primary germ layers in animal embryos; gives rise to the outer covering and - in some phyla - the nervous system - inner ear - and lens of the eye






10. Cells located in the seminiferous tubules to nourish spermatids






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






12. Any cell in a multicellular organism except a sperm or egg cell.






13. NORMAL STATE of BALANCED MUSCLE TENSION PRESENT In BODY WHEN One Is AWAKE






14. A neural structure lying below the thalamus; directs eating - drinking - body temperature; helps govern the endocrine system via the pituitary gland - and is linked to emotion






15. Occurs across the placenta - fetal lungs do not become functional until birth.






16. Tissue consisting of long muscle cells that are capable of contracting when stimulated by nerve impulses. Three types skeletal - cardiac - and smooth.






17. 1) stimulates osteoclast activity - 2) stimulates osteoblast activity to a lesser degree. 3) reduces calcium loss in the urine 4) promotes calcium absorption in the intestine (by stimulating calcitiol production) - 5) decrease PTH could result in mus






18. The transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins.






19. The maximal volume of air that the lungs can contain. Total lung capacity is the sum of the vital capacity and the residual volume - and is typically about 6000 mL (6L).






20. Gonadotropin releasing hormone; a decapeptide hormone produced by the hypothalamus that stimulates the adenohypophysis to release gonadotropins (as luteinizing hormone and follicle - stimulating hormone) -- abbreviation GnRH






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






22. A regulating body substance released in excess during allergic reactions causing swelling and inflammation of tissues






23. Pleura that lines the inner chest walls and covers the diaphragm






24. The immune reaction that occurs the first time a person is exposed to a particular antigen. protective antibodies appear about 3-6 days while naive B cells multiply and differentiate into plasma cells. causes the level in the blood plasma to rise. Ig






25. Binds more oxygen in red blood cells than adult hemoglobin - to aide in transferring oxygen across placenta.






26. Attack general invading pathogens. Three types are neutrophils - basophils and eosinophils.






27. An acute and potentially fatal infection of the central nervous system caused by a toxin produced by the tetanus bacteria






28. Wavelike contraction of the walls of the intestines - which propels contents onward






29. Process in which homologous chromosomes exchange portions of their chromatids during meiosis






30. The body system that consists of the heart - blood vessels - and blood - and that carries needed substances to cells and carries waste products away from cells






31. A band of cells along the border where the neural tube pinches off from the ectoderm; the cells migrate to various parts of the embryo and form the pigment cells in the skin - bones of the skull - the teeth - the adrenal glands - and parts of the per






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






33. 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






34. When comparing two solutions - the solution with the greater concentration of solutes






35. Are molecules that relay signals from receptors on the cell surface to target molecules inside the cell - in the cytoplasm or nucleus. They relay the signals of hormones like epinephrine (adrenalin) - growth factors - and others - and cause some kind






36. This poison that can carru protons across inner membrane; uncouples the electron transport chain from the proton gradient established across the inner mitochondrial membrane.






37. Organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells






38. Mesodermal tissue that forms connective tissue and blood and smooth muscles






39. An enzyme which contains a region to which small regulatory molecules may bind in addition to and separate from the substrate binding site - thereby affecting catalytic activity






40. Rope - like strands of protein that help to form desmosomes and resist pulling forces on the cell - Threadlike proteins in the cell's cytoskeleton that are roughly twice as thick as microfilaments






41. Form gametes which combine to form zygotes that develope into more sporozoites






42. Hyaline cartilage that covers ends of bones in synovial joints






43. Neurological tissue in the center of the heart that receives and amplifies the conduction of impulses from the SA node to the bundle of His






44. Membrane - bound space in the cytoplasm of cells used for the temporary storage of materials. Are larger than vesicles and are more likely found in plant cells.






45. Antibody found in blood and secretions - made more than any other isotype - most abundunt in the tears - sweat - saliva and mucosa.






46. Condition of hypersecretion of the thyroid gland characterized by exophthalmia - tachycardia - goiter - and tumor






47. (biology) growth anew of lost tissue or destroyed parts or organs






48. Whiplike tails found in one - celled organisms to aid in movement






49. Self - digestion occurring in plant and animal tissues - particularly after they have ceased to function properly






50. Found within the lymph nodes - they are phagocytes that destroy bacteria - cancer cells - and other foreign matter in the lymphatic stream.