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. A capsule of several layers of granulosa cells that surrounds the developing secondary oocyte. this remains intact for when the secondary oocyte enters the uterine tubes






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






3. Animal embryo development stage where cells on one side of the blastula move inward forming a cavity of two or three layers of cells with an opening at one end






4. Any nonprotein molecule or ion that is required for the proper functioning of an enzyme. Cofactors can be permanently bound to the active site or may bind loosely with the substrate during catalysis.






5. External female genitalia; includes the labia - hymen - clitoris - and the vaginal orifice






6. Lymphocytes that inhibit helper T cells and cytotoxic cells by negative feedback. They also prevent B lymphocytes from transforming into plasma cells. These cells provide the means by which the immune response can be shut down






7. (genetics) the process whereby genetic information coded in messenger RNA directs the formation of a specific protein at a ribosome in the cytoplasm






8. Very long organic compounds made up of carbon - hydrogen - nitrogen - and phosphurous - contain instructions that cells need to carry out all the functions of life. Nucleotides are formed by phosphodiester bonds.






9. Condition of hyposecretion of the thyroid gland causing low thyroid levels in the blood that result in sluggishness - slow pulse - and often obesity






10. Another term for R- group; variable grp of an amino acid that differs w/ each and determines the unique characteristics of a particular amino acid. also attached to the alpha carbon.






11. An electron - proton - or neutron; one of the three major particles of whoch atoms are composed






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






13. Process by which gametes are produced in male animals






14. Two lobes joined by a central mass in the throat - inferior to the larynx - produces two major hormones.






15. Fibers in the ventricles that transmit impulses to the right and left ventricles - causing them to contract






16. The path molecules travel when an imbalance between separated molecule concentrations exists






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






19. A chemical process in which a compound is broken down and changed into other compounds by taking up the elements of water. Breaks apart most macromolecules of living cells.






20. Hard - dense bone tissue that is beneath the outer membrane of a bone






21. Km - is the ratio of the breakdown of an enzyme - substrate complex to its formation in simple Michaelis - Menton reactions. Km is also half Vmax - and a low Km indicates a strong affinity between an enzyme and its substrate.






22. Products of the first meiotic division - contain a haploid number of dyads - and undergo the second stage of meiotic division.






23. The loss of electrons from a substance involved in a redox reaction.






24. A type of lymphocyte responisble for cell - mediated immunity that differentiates under the influence of the thymus






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






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






27. Drains away fluid so that it does not accumulate in the tissues of our body.






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






29. 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






30. The adaptive immune system is composed of highly specialized - systemic cells and processes that eliminate or prevent pathogenic challenges.the adaptive or 'specific' immune system is activated by the 'non - specific' and evolutionarily older innate






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






32. The second of two major stages in photosynthesis (following the light reactions) - involving atmospheric CO2 fixation and reduction of the fixed carbon into carbohydrate.






33. 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.






34. The second phase of meiosis consisting of chromatids separating - along with the two diploid cells splitting in two






35. A flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates






36. Series of anaerobic chemical reactions in which pyruvic acid uses NADH to form lactic acid and NAD+ - which is then used in glycolysis; supplies energy when oxygen for aerobic respiration is scarce






37. Nostrils which open into the nasal cavity; where air enters the respiratory system.






38. Holds membrane bound vesicle full of neurotransmitters






39. A complex carbohydrate found chiefly in seeds - fruits - tubers - roots and stem pith of plants - notably in corn - potatoes - wheat - and rice. Forms include amylose and amylopectin






40. One of the small intracellular globules composed of fats that are mixed cholesterol and coated with special proteins






41. Any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes - thus producing an immune response






42. The substance acted upon by an enzyme or ferment






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






44. The portion of the nephron where water reabsorption is regulated via antidiuretic hormone (ADH). Several nephrons empty into each collecting duct - and this is the final region through which urine must passon its way to the ureter.






45. A skeletal muscle whose contraction bends a joint






46. For very fatty foods - the duodenum releases this hormone to slow down the release of chyme by the stomach. (Fats take longer to digest).






47. The passage between the pharynx and the stomach






48. Endocrine cells in the islets of Langerhans of the pancreas. They synthesize and secrete the peptide GLUCAGON - which increases glucose levels in the blood






49. The breakdown of bone extracellular matrix by osteoclasts that is part of the normal development - maintenance - and repair of bone tissue






50. Thyrotropin - stimulates thyroid gland. Release of TSH triggered by TRH (thyrotropin - releasing hormone) -