Bio 101

2007 FR Cephalization and the development of a brain were important go in animal phylogenesis. a) Discuss the evolutionary origin and adaptational signifi assce of cephalization in animal phyla. b) Describe the development of the restless musical arrangements in the vertebrate embryo. c) At the sound of shattering glass, hoi polloi quick turn their heads. Discuss hoe the human nervous scheme functions to produce this type of rejoinder to an external stimulus. 2007B The demurral mechanisms of the human ashes to the entry and establishment of a pathogen (disease-causing organism) can be shared out into nonspecific results and specific responses. a) beg aside how THREE types of nonspecific defenses can prevent the entry and/or establishment of a pathogen in a persons body. b) Discuss how the immune system responds to an initial pathogenic exposure, and how this initial exposure can die hard to a faster response following a scrap exposure to the aforesaid(prenominal) pathogen. c) explicate the biological mechanisms that lead to the rejection of transplanted organs. 2006 FR The evolution of circulatory systems allowed larger and more-complex animals to arise. a) Describe the respiratory and digestive systems specialise structures that help oneself the movement of oxygen and glucose into the circulatory system of mammals.

b) explicate how oxygen and glucose are transported within the circulatory system of mammals. c) Explain the beam of oxygen and glucose from the blood and into the active cells of mammals. 2005FR An important defense against diseases in verteb! rate animals is the ability to eliminate, inactivate, or destroy orthogonal substances and organisms. Explain how the immune system achieves THREE of the following: Provides an contiguous nonspecific immune response Activates T and B cells in response to an infection Responds to a later exposure to the same pathogenic agent Distinguishes self-importance from nonselfIf you want to get a skillful essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper