课程名称︰普通生物学乙上 课程性质︰系必修 课程教师︰施秀惠 开课系所︰药学系 考试时间︰10/30 是否需发放奖励金：是 （如未明确表示，则不予发放） 试题 : 一、是非题(每题2分，计40分；对於以下各叙述，正确的请打○，错误的打X) 1.Chitin is a polysaccharide polymerized from the glucose monomers and used by anthropods to build their exoskeleton. 2.The first genetic material on earth was probably RNA, not DNA. 3.Gram positive bacteria have more complex cell walls with relatively small amount of peptidoglycan. 4.Cambrian explosion happened in the Mesozoic era approximately 250 million years ago. 5.The most common structures enable prokaryotes to move are flagella, which differ from those of eukaryotes in both structure and mechanism of propulsion. 6.Darwin called the evolutionary mechanism he proposed for descent with modification "natural selection." 7.Four elements-C, O, H, and N-make up 96% of living matter. Among them, carbon is the most abundant element by percentage that makes up the human body. 8.Molecular shape is crucial in biology, morphine and heroin mimic endorphins by binding to endorphin receptors in the brain is a good example. 9.Miller-Urey-type experiments prove that organic compounds may have been synthesized abiotically in the early Earth if the atmosphere were reducing. 10.The pentose is ribose in RNA and deoxyribose in DNA. The only difference between these two sugars is that deoxyribose lacks a -OH group on the second carbon in the ring. 11.Trypanosoma kinetoplastids cause sleeping sickness in humans which is spread by the African tsetse fly, and also cause Chagas' disease transmitted by bloodsucking bugs. 12.Evidences now support the view that bacteria and archaea represent two very distinct branches of prokaryotic life. 13.The concept of enantiomers is important in the pharmaceutical industry because the two enantioers of a drug may not be equally effective. 14.Phylogenetic trees and taxonomic groupings are testable but not falsifiable hypotheses that fit the best available data. 15.Cellular slim mold is a diploid organism and has become a model organism for addressing the evolution of multicellularity. 16.Most proteins become denatured if they are transferred to an organic solvent since the polypeptide chain refolds so that its hydrophobic regions face outward toward the solvent. 17.Ciliate's macronucleus typically contains dozens of copies of its genome, and the genes are packaged in smaller units, each bearing many duplicates of just a few genes. 18.Based on molecular systematics, the clade of protists Alveolata includes dinoflagellates, apicomplexans, and ciliates. 19.Methanogens that are classified in domain Bacteria use CO2 to oxidize H2, releasing methane as a waste product. 20.The proposed ancestors of mitochondria in eukaryotic cell were aerobic autotrophic prokaryotes. 二、填充题(48分)：以正确英文术语作答者，每格3分；以正确中文术语作答者，每格1分 1._____ are protein molecules that assist the proper _____ of other proteins. 2.Eukaryotic cells arose from _____ and _____ between prokaryotes. 3.The nutrition mode of _____ are _____, which are the first prokaryotes that generated O2 and thus changed the young Earth. 4.Apicomplexans in the genus _____ cause malaria and have a two-host life cycle, their sexual reproductions are proceeded in the _____ hosts. 5.Among levels of biological organization, _____ consist of all the living things in a particular area, along with all the nonliving components of the environment. And individual living things are called _____. 6.The attraction of a particular kind of atom for the electrons of a covalent bond is called its _____. The _____ of water molecule results in hydrogen bonding. 7.Structures of the following functional groups are: amino(ionized) _____; phosphate _____. 8.Phospholipids are arranged in a _____ structure at the surface of a cell, their hydrophilic heads are on the outside of this structure in contact with the _____ solutions inside and outside the cell. 三、问答题(15分)：请各举一例分别说明细菌如何对人类造成有益和有害的影响。 请问有谁有这份考古题的解答???? 这个题目大家看看吧 大家期中考一起加油~~ --

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