FA07 MT2 Key

FA07 MT2 Key - Name:_ Student ID #:_ BILD 2 Fall 2007...

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Name:______________________________ Student ID #:___________________ BILD 2 Fall 2007 Midterm #2
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Name:______________________________ Student ID #:___________________ Section I: Answer all of these questions (15 points each). 1) MHC Class I molecules _________ are found on the surface of almost all nucleated cells. They are responsible for the phenomenon of tissue transplant rejection. 2) Which types of lymphocytes act to directly destroy infected body cells, cancer cells and transplanted tissues? cytotoxic T lymphocytes 3) __ _Plasma ________ cells are antibody-producing effector cells. 4) Lymphocytes that are responsible for the more rapid, prolonged and effective response to a second encounter with an antigen are called by the general term, __ memory __ cells. 5) The ___ _HIV ____ virus attacks helper T-cells and is responsible for the disease known as __ AIDS ______. 6) Steroid hormones bind to receptors that function as __ transcription factors __________________ when activated. 7) The ___ hypothalamus ___________________ sends releasing hormones to the ___ pituitary _________________, which then secretes other hormones (such as the gonadotropins). 8) The organ that allows nutrient, gas, and waste exchange from mother to fetus is known as __ the placenta _______________________. It arises from the __ embryo (or fetus) and maternal tissues _______________. 9) A ___ freshwater ______________________fish needs to actively transport solutes into its body through its gills. 10) Lack of ____ iodine _______________ in the diet can cause the __ thyroid ________________ gland to overgrow, resulting in a goiter. 11) The ___ proximal tubule _________________ is where the majority of water in the initial kidney filtrate is reabsorbed. 12) When epinephrine binds to a target cell, the ____ adenylyl cyclase ____________________ enzyme is activated as part of a signal transduction pathway. 13) Meiosis occurs continuously (without interruption) during the production of these types of gametes: __ sperm cells or spermatocytes ___________________________. 14) The target cells for calcitonin reside in the _________
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FA07 MT2 Key - Name:_ Student ID #:_ BILD 2 Fall 2007...

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