FinalExamWI09key

FinalExamWI09key - Name:_ Student ID #:_ BILD 2 Final Exam...

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Name:___________________________ Student ID #:_________________________ BILD 2 Final Exam
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Name:___________________________ Student ID #:_________________________ SECTION ONE. Answer all questions. One point each response. 25 points total for this section. 1) The plant hormone ___ auxin _____________ moves in response to light, and regulates plant cell growth or size. 2) Breathing rate with increase when ___ increased ______ CO 2 level in your blood causes a __ decrease ___ in pH. The sensors that actually measure this pH change are located _ in the medulla oblongata or brainstem ________ . 3) __ Motor __ neurons send connections from the spinal cord to muscles. ___ Interneurons __ connect one neuron with another in the brain. __ Sensory _____ neurons send axons from the eyes or ears into the brain. 4) Blood calcium levels are regulated by the _____ parathyroid ___ gland(s). 5) If after a stroke (cessation of blood flow to the brain) a pro-tennis player could no longer swing a tennis racket properly, her ___ cerebellum _____ might have been damaged. If she couldn’t remember new things for longer than a few minutes, her __ hippocampus _______ might have been damaged. If her face felt completely numb, her ___( somato)sensory cerebral cortex ____ might have been damaged. 6) When acid chyme reaches the duodenum, the hormone ___ CCK ____ is released by endocrine cells in the duodenum, which then travels through the blood eventually binding to cells in the ___ pancreas ____. This causes release of ___ bicarbonate ____, which neutralizes the acid chyme. 7) After gastrulation, three “germ layers” are formed in a developing embryo. The ___ endoderm ____ will give rise to the epithelial lining of the digestive tract, the ____ ectoderm _____ will give rise to the nervous system, and the ____ mesoderm ____ will give rise to muscle tissue. 8) Light is first sensed in our visual system through the photon-induced isomerization of a chemical called ___ retinal ________. 9) About 70% of CO 2 produced by our body tissues is transported through the blood as ___ bicarbonate __. 10) Chief cells in the stomach secrete __ pepsinogen ____, an inactive protease. This is converted into the active protease ___ pepsin _____ through contact with ____ HCl ______ secreted by the parietal cells. Once activated, the protease rapidly activates any molecules of its inactive precursor form, an example of a __ positive ___ feedback loop. 11) The specialized process of cell division known as ____ meiosis _____ leads to the production of sperm and egg cells. During their differentiation from a single precursor cell this leads to the formation of 4 mature sperm, but only one mature egg and __ 2 ____ polar bodies.
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Name:___________________________ Student ID #:_________________________ SECTION TWO. Answer all questions in this section. Points for each question are as shown. 30 points total for this section. 12) (
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FinalExamWI09key - Name:_ Student ID #:_ BILD 2 Final Exam...

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