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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. A type of intercellular junction in animal cells that allows the passage of material or current between cells






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






3. A metabolic process that breaks down carbohydrates and sugars through a series of reactions to either pyruvic acid or lactic acid and release energy for the body in the form of ATP - the anaerobic breakdown of glucose to pyruvic acid - which makes a






4. A short - branched polysaccharide with short - linear amylose branches that are typically 20-30 subunits






5. Colorless watery fluid of blood and lymph containing no cells and in which erythrocytes and leukocytes and platelets are suspended






6. Part of the Loop of Henle that removes Sodium from the blood. - Reabsorption of ions; creates the concentration gradient in the medulla - enabling the kidney to produce concentrated urine






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






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






9. 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






10. A four - carbon molecule that binds with the two - carbon acetyl unit of acetyl - CoA to form citric acid in the first step of the Krebs cycle.






11. The hollow muscular organ located behind the sternum and between the lungs






12. A glycoprotein in the extracellular matrix of animal cells that forms strong fibers - found extensively in connective tissue and bone; the most abundant protein in the animal kingdom.






13. Binds more oxygen in red blood cells than adult hemoglobin - to aide in transferring oxygen across placenta.






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






15. Pleura that lines the inner chest walls and covers the diaphragm






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






17. 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






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






19. Stack of membranes in the cell that modifies - sorts - and packages proteins from the endoplasmic reticulum. Recieves vesicles and their contents from smooth ER.






20. Hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells






21. 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






22. Time between application of a stimulus and the beginning of a response in a muscle fiber






23. A solid ball of cells that makes up an embryo; in humans - this stage occurs within four days of fertilization.






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






25. Gland that releases its secretions through tubelike structures called ducts






26. One of the formed elements present in our blood. They function in hemostasis (blood clot formation). They are cell fragments of large multinucleate cells (megakaryocytes) formed in the bone marrow. They appear to be irregular - darkly stained shapes.






27. Dynamic tissue undergoing constant remodeling due to internal and external forces - weight bearing and muscle contraction encourages stronger bone - limited or non - weight bearing and bed rest decrease bone strength






28. The class of immunoglobulin having






29. Given to control diabetes insipidus and promote reabsorption of water in the kidney tubules.






30. Bone marrow of children and some adult bones that is required for the formation of red blood cells






31. A class of fatty acids that regulate blood vessel vasodilation - temperature elevation - WBC activation - and other physiologic processes involved in immunity.






32. Organic compound with a backbone of three carbon atoms. Two molecules form as end products of glycolysis






33. Lacking affinity for water






34. Cells created in the thymus that produce substances that attack infected cells in the body.






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






36. Membrane - bound space in the cytoplasm of cells used for the temporary storage of materials. Are larger than vesicles and are more likely found in plant cells.






37. Contains centers that control several visceral functions - including breathing - heart and blood vessel activity - swallowing - vomiting - and digestion.






38. A lymphocyte that matures in the bone marrow; after encountering an antigen - it will differentiate into antibody- secreting plasma cells (effector cells of humoral immunity)






39. A thin layer of cells that line the interior surface of the blood vessels - forming an interface between circulating blood in the lumen and the rest of the vessel wall. Simple squamous epithelium.






40. The passage between the pharynx and the stomach






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






42. Tissue that connects bone to bone






43. Any of a group of enzymes (trade name Lactaid) that hydrolyze lactose to glucose and galactose






44. In immune network theory - an idiotope - an antigenic site of an antibody that is responsible for that antibody binding to an antigenic determinant (epitope).






45. The middle primary germ layer of an early embryo that develops into the notochord - the lining of the coelom - muscles - skeleton - gonads - kidneys - and most of the circulatory system






46. Series of events that cells go through as they grow and divide






47. 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






48. Inactivity resulting from torpidity and lack of vigor or energy






49. Generation of glucose from non - sugar carbon substrates like pyruvate - lactate - glycerol - and amino acids The vast majority takes place in the liver and - to a smaller extent - in the cortex of kidney. This process occurs during periods of fastin






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







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