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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. The process by which the positive and negative ions of an ionic solid become surrounded by solvent molecules






2. A nerve or muscle fibre responds completly or not at all to a stimulus






3. Bone forming cells






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






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






6. 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






7. The inactive form of pepsin that is first secreted by specialized (chief) cells located in gastric pits of the stomach.






8. An essential structural component of living cells and source of energy for animals.






9. Relatively massive bundles of subunits composed of the protein myosin that can reach 15nm in diameter






10. Maximum enzyme functioning velocity Decreases w/non competitive inhibitors






11. Part of the adrenal gland that produces three major groups of steroid hormones called corticosteroids.






12. Measurement of amount of blood ejected from a ventricle in one contraction






13. A type of embryonic development in deuterostomes - in which each cell produced by early cleavage divisions retains the capacity to develop into a complete embryo.






14. The process that synthesizes a complex molecule from simpler compounds - thus requiring energy.






15. In immune network theory - an idiotope - an antigenic site of an antibody that is responsible for that antibody binding to an antigenic determinant (epitope).






16. Produce about 60% of seminal fluid - these are located at the posterior wall of the urinary bladder close to the terminus of the ductus deferens. They produce a substance that nourishes the sperm passing through the tract or that promote the fertiliz






17. Intestinal enzyme that completes digestion of partially digested proteins to amino acids






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






19. Generate and degrade H2O2 in performing various metabolic functions transfer hydrogen from various substrates to oxygen and they produce H2O2. Use O2 to break down fatty acids that can be sent to mitochondria






20. A biomolecule that binds to the regulatory site of an allosteric protein and thereby modulates its activity. An allosteric modulator may be an activator or an inhibitor. Also known as the allosteric effector.






21. A fatty acid possessing one or more double bonds between the carbons in the hydrocarbon tail. Such bonding reduces the number of hydrogen atoms attached to the carbon skeleton.






22. Generalized edema with accumulation of serum in subcutaneous connective tissue






23. The presence of an abnormally high level of carbon dioxide in the circulating blood






24. An enzyme that catalyzes the elongation of new DNA at a replication fork by the addition of nucleotides to the existing chain.






25. Support sperm formation; development and maintenance of male secondary sex characteristics






26. A chemical reaction in which two molecules covalently bond to each other with the removal of a water molecule.






27. Also called the birth canal - canal in the female from the vulva to the cervix that receives the penis in intercourse






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






29. Connective tissue cells that produce fibrous components of extracellular matrix like collagen and elastin






30. 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.






31. The female reproductive cell






32. Glands located in the walls of the stomach - secreting the hormone gastrin in response to certain substances in food.






33. From the umbilical vein - where most of the fetal blood flows through the liver






34. It is the lowermost layer of the integumentary system in vertebrates. Types of cells that are found in the hypodermis are Fibroblasts - Adipose Cells - and Macrophages






35. Excited electrons are passed from protein to protein in the thylakoid membrane






36. An internal membrane system in which components of cell membrane and some proteins are constructed. Involved of the transport of materials throughout the cell.






37. A thick - transpartent coating rich in glycoproteins that surrounds an oocyte.






38. The two types of white blood cells that are part of the body's immune system: B lymphocytes form in the bone marrow and release antibodies that fight bacterial infections; T lymphocytes form in the thymus and other lymphatic tissue and attack cancer






39. The period of the cell cycle during which the nucleus is not undergoing division - typically occurring between mitotic or meiotic divisions






40. A neuron conducting impulses outwards from the brain or spinal cord






41. A large polysaccharide composed of many glucose monomers linked into cable - like fibrils that provide structural support in plant cell walls. Contains B- linkages.Animals cannot digest the B- linkages of this molecule.






42. A group of hereditary bleeding disorders in which there is a defect in clotting factors necessary for the coagulation of blood






43. 4th and last phase of mitosis - the 2 sets of chromosomes arrive at opposite ends of the cell and new nuclei form around each new set






44. 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






45. Any of the small tubules that are the excretory units of the vertebrate kidney - functional unit of the kidney






46. (anatomy) a muscular partition separating the abdominal and thoracic cavities






47. The presence - or lack - of antigens on the surface of red blood cells that may cause a reaction between the blood of the mother and fetus - resulting in fetal anemia






48. The structure that attaches most epithelia to underlying tissue; consists of carbohydrates and proteins secreted by the epithelia and the underlying connective tissue.






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






50. Small organic molecule that regulates the activity of an enzyme for: Neither the substrate or immediate product / Binds to one of the two forms of the enzyme / Binds at allosteric site (regulatory site) / Distinct from the active site: Stabilizes enz







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