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






2. Stimulates cortex of the adrenal glands to make cortisol/ cortisone which is needed in stressful situations






3. A muscle that is connected at either or both ends to a bone and so move parts of the skeleton






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






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






6. Dynamic - temporary array of microtubules that moves chromosomes in precise directions during mitosis or meiosis.






7. Carries both electrons and protons (2 at a time)






8. Part of the electron transport chain. A process occurring in the mitochondria that results in the formation of ATP from the flow of electrons across the inner membrane to bind with oxygen.






9. A skeletal muscle whose contraction extends or stretches a body part






10. Finger - like projections that increase the surface area and increase absorption






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






12. An enzyme that catalyzes the conversion of ADP to ATP as a result of a series of events that occur in and around a membrane. in prokaryotes it is in the cell membrane and in eukaryotes it is in the mitochondrial membrane






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






14. A form of asexual reproduction in single - celled organisms by which one cell divides into two cells of the same size






15. 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






16. The part of the large intestine that ascends from the cecum to the transverse colon






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






18. The contraction of the chambers of the heart (especially the ventricles) to drive blood into the aorta and pulmonary artery






19. Joint - lubricating fluid secreted by the synovial membrane






20. Iron - containing protein in red blood cells that carries oxygen for delivery to cells






21. 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






22. The part of an organism that connects the head to the rest of the body






23. Pressure exerted by a volume of fluid against a wall - membrane - or some other structure that encloses the fluid.






24. Any of various compounds composed of fatty acids and phosphoric acid and a nitrogenous base - A molecule that is a constituent of the inner bilayer of biological membranes - having a polar - hydrophilic head and a nonpolar - hydrophobic tail. Are als






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






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






27. Synthesised from ATP by adenylyl cyclase located on the inner side of the plasma membrane. Adenylyl cyclase is activated by a range of signaling molecules through the activation of adenylyl cyclase stimulatory G (Gs)- protein - coupled receptors and






28. (genetics) the organic process whereby the DNA sequence in a gene is copied into mRNA






29. 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






30. Accounts for 2/3 of the weight of bone; formed when calcium phosphate interacts with calcium hydroxide






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






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






33. 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.






34. The breakdown of carbohydrates by enzymes - bacteria - yeasts - or mold in the absence of oxygen






35. The brain's sensory switchboard - located on top of the brainstem; it directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla






36. Animals whose anus develops from the blastopore of the gastrula






37. 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.






38. 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






39. The maximum pressure that could develop in a solution when it is separated from pure water by a selectively permeable membrane






40. A chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g. - oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bond






41. A period after firing when a neuron is returning to its normal polarize state and will only fire again if the incoming message open parentheses impulse) is stronger than usual; returning to arresting state






42. Smooth muscle and cardiac muscle has the property of flexing without nervous stimulation called...






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






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






45. Physical process of breaking up large fat globules into smaller globules - thereby increasing the surface area that enzymes can use to digest the fat.






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






47. Pertaining to substances that don't contain carbon; a substance that is produced from the breakdown of PC and is the leading cause of fatigue in working muscles






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






49. The passage to the stomach and lungs






50. Hormone secreted by the hypothalamus that can suppress secretion of hormones by the anterior pituitary