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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. This multiprotein complex in the ETC catalyzes the transfer of the electrons to oxygen






2. The changing of the vitelline membrane into a hard fertilization envelope that further resists the entry of other sperm.






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






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






5. A stable complex of hemoglobin and carbon monoxide that prevents normal oxygen uptake in the blood.






6. The part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands






7. Fluid within the amniotic sac that surrounds and protects the fetus






8. The cluster of cells inside the blastocyst that eventually develops into the embryo and some of the membranes that surround a mammalian embryo and fetus.






9. The process by which wastes are removed from the body






10. A spiral shape constituting one form of the secondary structure of proteins - arising from a specific hydrogen - bonding structure.






11. Connects the embryo to the placenta; moves food and oxygen from the placenta to the embryo and removes the embryo's waste products






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






13. Small organelles filled with enzymes; one function is to break down lipids - carbohydrates - and proteins from food particles; may also break down old cell parts. enzymes are maximally effective at a pH of 5 and they fuse with endocytic vacuoles to b






14. Contraction of diaphragm and the intercostal muscles - increasing thoracic volume - reducing pressure in the intrapleural space creating a vacuum that causes the lungs to suck in air - as well as draw in blood from the rest of the body (particularly






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






16. The increase in concentration of solutes from the cortex to the medulla - allows for urine hypertonicity






17. The third phase of the ovarian cycle - during which a corpus luteum is formed from the remnants of the follicle that has ovulated its oocyte. The corpus luteum secretes progestrone and estrogen during this time period - which typically lasts from day






18. Any cell in a multicellular organism except a sperm or egg cell.






19. Area of prokaryotic cells where the DNA is concentrated.






20. The thin endometrium layer of the uterus that does not shed and is responsible for forming a new functional layer after menstruation ends






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






22. Induces contraction of the uterine muscles during childbirth and causes the mammary glands to eject milk during nursing






23. Require B and T cells. B cells undergo clonal selection with production of plasma cells and memory B cells after their B- cell receptor combines with a specific antegen. Plasma cells secrete antibodies and eventually undergo apoptosis. Memory B cells






24. A muscle that draws a part toward the median line






25. Genes located on the same chromosome that tend to be inherited together in genetic crosses






26. Each enzyme catalyzes only one kind of reaction






27. Cartilaginous area at the ends of long bones where lengthwise growth takes place in the immature skeleton






28. Hemolytic disease in the newborn caused by a blood groop (Rh factor) incompatibility between the mother and the fetus






29. The class of immunoglobulin having






30. A type of glucocorticoid released by the adrenal cortex. It converts amino acids to glucose - helps to breakdown fats to fatty acids. Decreases glucose uptake by the muscles and increases blood sugar in response to stress. Strong anti - inflammatory






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






32. The third level of protein structure; the overall - three - dimensional shape of a polypeptide due to interactions of the R groups of the amino acids making up the chain.






33. Abnormally high acidity (excess hydrogen - ion concentration) of the blood and other body tissues






34. Used to assess the rates at which enzymatic reactions occur /Will focus primarily on initial reaction rates measured over time /Influenced by a variety of factors : Concentrations of substrates - products and inhibitors






35. The division of the peripheral nervous system that controls the body's skeletal muscles. Also called the skeletal nervous system






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






37. Structure in the male reproductive system in which sperm are fully matured and are stored






38. Human Chorionic Gonadotropin - a hormone secreted by the trophoblast cells of a blasocyst (i.e. developing embryo) that prolongs the life of the corpus luteum - and thus increases the duration and amount of secreted progesterone. This helps to mainta






39. Hyaline cartilage that covers ends of bones in synovial joints






40. Joint - lubricating fluid secreted by the synovial membrane






41. An organism that uses energy to control its internal environment






42. Rapid antibody production that occurs following re - exposure to the antigen. IgG is the predominant antibody produced during this.






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






44. 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






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






46. Secreted by the anterior pituitary. It is a general metabolic hormone that plays an important role in determining body size. It affects many tissues of the body; however its major effects are on the growth of muscle and the long bones of the body.






47. An extensible membrane enclosing the contractile substance of a muscle fiber






48. The final stage of mitosis or meiosis - during which a nuclear membrane forms around each set of new chromosomes






49. The protective skin pigment responsible for the tan - brown - or black color of human skin; produced in abundance upon exposure to ultraviolet radiation






50. Lines the surface of the lung and follows the contours of the lung itself