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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. Lipoproteins formed in the cells lining the small intestine following absorption of fats. they are made in the small intestinal cells and transpost dietary lipids to the liver.






2. Compounds made of a metal and nonmetal that are formed when acids and bases react






3. An agranulocytic leukocyte that performs phagocytosis to fight infection






4. Predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll.






5. A substance found in blood plasma that is the precursor to thrombin in the coagulation of blood






6. Holds membrane bound vesicle full of neurotransmitters






7. Lymphocyte that matures in the bone marrow and later produces antibodies; responsible for humoral immunity






8. The spiny sublayer just below the stratum ganulosum contains cells that create an immune response to protect the body against foreign bodies that get through the first three outer sublayers of skin






9. First and longest phase of mitosis - during which the chromosomes become visible and the centrioles separate and take up positions on the opposite sides of the nucleus






10. An enzyme from the pancreas that digests proteins in the small intestine






11. Bone marrow that is yellow with fat; found at the ends of long bones in adults






12. Synthesis of lipids - phospholipids and steroid sex hormones - help detoxify drugs and poisons (liver cells) involves adding hydroxyl groups to drugs to make soluble and easier to flush from body. - That portion of the endoplasmic reticulum that is f






13. The part of the small intestine between the stomach and the jejunum






14. A nucleotide found in muscle cells and important in metabolism






15. Small units that are linked together chemically to form large protein molecules






16. Small - elongated mass of specialized cardiac muscle tissue just beneath the epicardium in the right atrium near the opening of the superior vena cava - starts impulses






17. Aid in expiration by contracting to pull the ribs downward and decrease the volume of the thoracic cavity (internal intercostal muscles originate in the inferior rib and insert on the superior rib)






18. Synaptic gap or synaptic space; tiny gap between the terminal of one neuron and the dendrites of another neuron (almost never touch); location of the transfer of an impulse from one neuron to the next






19. A bundle of modified heart muscle that transmits the cardiac impulse from the atrioventricular node to the ventricles causing them to contract






20. The most widespread connective tissue in the vertebrate body. It binds epithelia to underlying tissues and functions as packing material - holding organs in place.






21. Parasite that cannot multiply unless it invades a specific host cell and instructs its genetic and metabolic machinery to make an release quantities of new viruses






22. Strand of Actin. Each actin has an active site that can interact with Myosin. Active sites are covered by tropomyosin strands - which are held in place by Troponin.






23. The minimum amount of energy required to start a chemical reaction reduced by enzymes.






24. 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






25. Gel consisting of a network of insoluble protein fibers






26. Is a negative feedback process which regulates the reaction rate. If it gets too much it begins to produce less if it becomes scarce or doesn't produce enough it begins to produce more






27. The second phase of meiosis II. Metaphase II is identical to mitotic metaphase - except that the number of chromosomes was reduced by half during meiosis I.






28. A digestive hormone secreted by the stomach lining; stimulates the secretion of fluid by gastric glands in the stomach






29. Fine - collagenous fibers whose networks surround and support the soft tissue of organs - and stabilize the positions of functional cells






30. Lines the surface of the lung and follows the contours of the lung itself






31. Minimal value that must be reached for the system to respond. Muscle fibers and neurons exhibit an all - or - none response - where the system initiates an action potential only if stimulus is sufficient.






32. An antibody that is involved in hypersensitivity and allergies. For some reason the body makes this antibody instead of IgG/A






33. Sequence of a eukaryotic gene's DNA that is not translated into a protein






34. The small artery that carries blood away from the capillaries of the glomerulus.






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






36. Causes bends/kinks in the protein - ring structured R group - linking carboxylic acid to amine group.






37. A blood protein essential to blood clotting. The conversion of fibrinogen to its active form (fibrin) is among the final steps in clot formation - and is triggered by thrombin.






38. Provides support for your body and connects all its parts. Specialized tissue includes bone - cartilage - tendons - ligaments - adipose tissue - and blood.






39. Refers to a chain of events initiated by an unnecessary test - an unexpected result - or patient or physician anxiety - which results in ill - advised tests or treatments[1] that may cause harm to patients as the results are pursued.






40. Identical twins formed when one zygote splits into two separate masses of cells - each of which develops into a separate embryo






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






42. A muscle cell or gland cell that performs the body's responses to stimuli; responds to signals from the brain or other processing center of the nervous system.






43. Sequence of nucleotides on a gene that gets transcribed and translated






44. A solution in which the concentration of solutes is greater than that of the cell that resides in the solution






45. Secreted by the anterior pituitary. It is a general metabolic hormone that plays an important role in determining body size. It affects many tissues of the body; however its major effects are on the growth of muscle and the long bones of the body.






46. Layer of bone tissue having many small spaces and found just inside the layer of compact bone.






47. Polar hormones incapable of permeating the cell membrane that bind to surface receptors and act through secondary messengers






48. Protein molecules that assist the proper folding of other proteins; they work by keeping the new polypeptide segregated from bad influences in the cytoplasmic environment while it folds spontaneously






49. Any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active






50. The portion of the vertebrate nervous system consisting of the brain and spinal cord