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. 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


2. Organ of the female reproductive system in which a fertilized egg can develop






3. Duct through which urine is discharged in most mammals and which serves as the male genital duct






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






5. 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






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






7. 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






8. The influence of a specific group of cells on the differentiation of another group of cells






9. Space between the two membranes - visceral pleura and parietal pleura - that cover the lungs.






10. Direct the antigen - antibody response by signaling between the cells of the immune system






11. 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






12. Alpha helix and beta pleated sheet formed through formation of hydrogen bonds. - The second level of protein structure; the regular local patterns of coils or folds of a polypeptide chain.






13. The potential energy stored in the form of an electrochemical gradient - generated by the pumping of hydrogen ions across biological membranes during chemiosmosis.






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






15. The stage in mitosis or meiosis in which the duplicated chromosomes line up along the equatorial plate of the spindle






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






17. An enzyme that phosphorylates something else. Kinases are frequently used in regulatory pathways - phosphorylating other enzymes.






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






19. The immune reaction that occurs the first time a person is exposed to a particular antigen. protective antibodies appear about 3-6 days while naive B cells multiply and differentiate into plasma cells. causes the level in the blood plasma to rise. Ig






20. 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






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






22. A regulatory protein that is a component of the thin filament. When calcium ions (Ca2+) bind to troponin - it undergoes a change in shape; this conformational change moves tropomyosin away from myosin - binding sites on actin molecules - and muscle c






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






24. They way in which DNA base pairs are arranged






25. Duct formed by the union of the vas deferens with the duct of the seminal vesicle; its fluid is carried into the urethra






26. 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






27. The inner germ layer that develops into the lining of the digestive and respiratory systems






28. A type of cell death in which the cell uses specialized cellular machinery to kill itself






29. Connective tissue with large amounts of either collagen fibers (making them strong) or elastic fibers - or both. Dense tissues are typically strong (e.g. bone - cartilage - tendons - etc.)






30. Located at the base of the esophagus and functions to prevent food materials from entering the esophagus from the stomach






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






32. Forms the main trunk of the body and is composed of the skull - spinal column - ribs - and breastbone






33. Steroid hormones secreted from the adrenal cortex. The two major classes are teh mineralocorticoids and glucocorticoids. Aldosterone is the principal mineralocorticoid - and cortisol is the principal glucorcorticoid.






34. 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






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






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






37. The endocrine system's most influential gland. Under the influence of the hypothalamus - the pituitary regulates growth and controls other endocrine glands






38. Outermost membranous sac enclosing the embryo in higher vertebrates (reptiles - birds and mammals)






39. Person with type AB blood who can recieve any blood because it has no antibodies






40. New combination of genetic information in a gamete as a result of crossing over during prophase I of meiosis






41. The clear fluid that bathes each cell and transfers needed substances and wastes back and forth between the blood and the cells






42. 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)






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






44. 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






45. Has both a hydrophilic (polar) phosphoric acid and a hydrophobic (non - polar) fatty acid region. Hydrophilic regions are found on the outside of the membrane and hydrophobic regions are found on the interiorof the membrane. Structure allows for sele






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






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






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






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






50. The outermost of the three primary germ layers in animal embryos; gives rise to the outer covering and - in some phyla - the nervous system - inner ear - and lens of the eye