Bio 101

2007 FR Cephalization and the development of a brain were important travel in animal phylogenesis. a) Discuss the evolutionary origin and adaptive signifi assce of cephalization in animal phyla. b) Describe the development of the head-in-the-clouds melodious arrangements in the vertebrate embryo. c) At the sound of shattering glass, great deal quick turn their heads. Discuss hoe the human nervous scheme functions to produce this type of rejoinder to an external stimulus. 2007B The self-renunciation mechanisms of the human ashes to the entry and establishment of a pathogen (disease-causing organism) can be shared out into nonspecific responses and specific responses. a) beg glowering 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 quick response fo llowing a scrap exposure to the aforementioned(prenominal) pathogen. c) explicate the biological mechanisms that lead to the rejection of transplanted organs. 2006 FR The evolution of circulative systems allowed larger and more-complex animals to arise. a) Describe the respiratory and digestive systems specialise structures that make haste the movement of group O and glucose into the circulatory system of mammals.

b) rationalise how oxygen and glucose are transported within the circulatory system of mammals. c) Explain the permute of oxygen and glucose from the blood and into the acti ve cells of mammals. 2005FR An important! defense against diseases in vertebrate 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 morbific agent Distinguishes self-importance from nonselfIf you want to get a wide-eyed essay, order it on our website: OrderCustomPaper.com

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