大学考试试卷-蚕体解剖生理（双语）A卷标准答案.doc

大学考试试卷蚕体解剖生理（双语）（A卷）标准答案一、 填空（共10小题，每题2分，共20分）Fill in the blanks with correct words. 10 topics with each 2 points sum to 20 points.1. Insects like silkworms that undergo complete metamorphosis have a typical life cycle including eggs , larvae , pupae , and moth (adult) stage.2. The silkworm is a species of insecta or arthropods （纲或门）that has 13 segments, 9 pairs of spiracles, and 5 pairs of abdominal feet. 3. Correctly fill the blanks below that represent corresponding composition of silkworm brain. 1 Brain2 Subesophageal ganglion3 Corpora cardiaca4 Corpora allata5 Lateral pharyngeal nerve cord6 Recurrent nerve4. The six most common types of hemocytes in silkworm are prohemocytes, plasmatocytes, granulocytes, spherulocytes, oenocytoids, and coagulocytes. 5. Larvae of Lepidoptera tend to have a very high midgut pH, varying from about 8~10 . However, the midgut pH of silkworm is 9.42 .6. Chemoreceptors of the silkworm including contact receptors: gustatory or taste receptor and olfactory receptors.7. The silkworm brain consists of three fused ganglionic masses: the protocerebrum, the deutocerebrum, and the tritocerebrum.8. The general anatomy of the male Bombyx mori internal organ, could be consist of the paired testes, the vas deferens, the ejaculatory duct and accessory glands.9. Insect cellular immunity includes phagocytosis, nodule formation, encapsulation and aggregation.10. At the end of gastrulation, there is an outer layer cells named ectodermal and an inner layer of cells termed mesentodermal layer. 得分二、 正误题（共10小题，每小题1分，共10分），正确的标记√，错误标记。

True-false items. 10 items with each 1 points sum to 10 points. True label tick and false label cross.11．Some insects swallow air or swallow water to expand the gut and split the old cuticle. ( √ )12. The silkworm is the only typical insect that has stemmata at the larval stage and compound eyes at the moth stage. ( )13. The central body complex in deutocerebrum appears to be involved in "arousal" behavior. ( )14. Stimuli cause changes in membrane permeability of excitable cells. ( √ )15. Diapause termination usually depends on reception of token stimuli concerning the physiological conditions. ( )16. Panoistic ovarioles do not have nurse cells. ( √ )17. In Bombyx mori, biting responses are stimulated by β–sitoaterol, leafaldehyde and linalool . ( )18. The antenna of male commercial silk moth, B.mori, send many impulses per second into the brain even when not stimulated by pheromones. ( √ )19. Urine formation in Malpighian tubules relies on concentration of saline. ( )20. Allelochemicals influence the behavior or physiology of a members of a different species than that of the producer. (√ )得分三、 理解题（阅读下列短文回答问题，共5小题，10分）。

Comprehension (Read the following 2 paragraphs, answer the questions, 10 points).Traditionally, silk proteins are thought to be two phased semi-crystallinepolymers containing both crystalline and non-crystalline regions. The crystallineregions have been identified as rigid, tightly packed anti-parallel β -pleated sheets.The β -sheets are either poly-Ala, or poly-Gly-Ala, interlocking with adjacent chainvia hydrogen bonds. The non-crystalline domains are often described as poorlyorientated, randomly coiled sections of the peptide, or ‘amorphous’.Fibroin from the silkworm B. mori is composed of two chains (H-fibroin [heavy]and L-fibroin [light]) linked by a disulfide bond. Another component of the protein isP25, which has been suggested to act as a chaperone to assist in the transport andsecretion of H-fibroin. H-fibroin, L-fibroin and P25 are thought to be assembled in theratio 6:6:1. This assembly appears to be standard in silk secreted by members of thelepidoptera order, with the exception of the saturniidae family, where L-fibroin andP25 are absent.Silk fibroin can exist in a number of different conformational states: Silk I andsilk II. Silk II is the solid fibroin that can be found in the spun silk thread, while silk Iis the dissolved, meta-stable form stored in the silk gland.21．Which statement is correct? ( B )A. The crystalline regions of silk proteins are poly-Ala and poly-Gly-Ala.B. Saturniidae family is also an order of lepidotera.C. Silk I and Silk II are different silk fibroin conformational states, which can befound in the silk gland.D. Two chains of fibroin from the silkworm B. mori are assembled by hydrogenbonds.22. “Amorphous” in the text means ( A )A. n。