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






2. A hollow rod of tubulin protein in the cytoplasm of all eukaryotic cells and in cilia - flagella - and the cytoskeleton.






3. The class of immunoglobulin having






4. Respiration in the absence of sufficient oxygen leads to a build up of lactic acid that has to be cleared when sufficient oxygen is available.






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






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






7. Enlargement of the thyroid gland caused by thyroid dysfunction - tumor - lack of iodine in the diet - or inflammation (goiter = throat)






8. The layer of epidermis immediately under the stratum corneum in the skin of the palms and soles






9. Any of several quinones that function as electron - carrying coenzymes.






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






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






12. Lipid substances with linked sugar groups that are key structural elements in cell membranes and precursors of other biologically active molecules important in cell signaling.. Are also amphipathic and are found in myelinated cells composing the huma






13. Involves the formation of bone within mesenchyme arranged in sheet like layers that resemble membranes.






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






15. The cells - tissues - and organs that protect the body from disease. the immune system is composed of the white blood cells - bone marrow - thymus gland - spleen and other parts






16. Growth Hormone Releasing Hormone released from hypothalamus via hypophyseal porthole stimulates somatotropins in anterior pituitary to release GH






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






18. 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






19. A semiliquid mass of partially digested food that passes from the stomach through the pyloric sphincter into the duodenum






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. The female reproductive cell






22. The model of the enzyme that shows the substrate binding to the active site and the active site altering slightly is the






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






24. Thin - walled microscopic air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place






25. The number of times the heart beats in one minute. It changes in response to activity - stress - illness - etc.






26. The outer covering of protein surrounding the nucleic acid of a virus






27. 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






28. 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






29. The maintenance of internal body temperature within a tolerable range






30. The process by which a substance is released from the cell through a vesicle that transports the substance to the cell surface and then fuses with the membrane to let the substance out






31. 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






32. The first phase of meiosis I. During prophase I the replicated chromosomes condense - homologous chromsomes pair up - crossing over occurs between homologous chromosomes - the spindle is formed - and the nuclear envelope breaks apart into vesicles. P






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






34. Strong connective tissue that supports the body and is softer and more flexible than bone






35. The extraembyonic membrane of birds - reptiles and mammals that serves as an area of gaseous exchange and as a site for the storage of noxious excretion products






36. Two spongy organs - located in the thoracic cavity enclosed by the diaphragm and rib cage - responsible for respiration






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






38. When the chromosomes replicate






39. Rare childhood disorder with deficiencies of glucocorticoids and mineralocorticoids - may occur as a resuld of trauma - infection or autoimmune response - develops gradually.

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40. (Slow twitch fibers) have a high myoglobin content and many mitochondria. Aerobic respiration and are capable of sustained and vigorous activity.






41. Condition of congenital hypothyroidism in children that results in a lack of mental development and dwarfed physical stature; the thyroid gland is either congenitally absent or imperfectly developed






42. A cell of the gastric glands that secretes pepsinogen (breaks down protein) and gastric lypase






43. Any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen)






44. 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






45. A cell that has only one representative of each chromosome pair






46. Precursor of the digestive enzyme chymotrypsin. comes from the acinar cells in the pancreas and is activated by autocatalysis or by trypsin (the active form of trypsinogen)






47. The sensory and motor neurons that connect the CNS to the rest of the body






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






49. An enzyme complex in the inner membrane of a mitochondrion and the thylakoid membrane of a chloroplast that catalyzes the formation of ATP.






50. First step in releasing the energy of glucose - in which a molecule of glucose is broken into two molecules of pyruvic acid