[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-457730-105":59,"doc-detail-457730-en":129},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":122,"head_meta":124,"extra_data":126,"updated_unix":128},105,"en","unit-4-cell-communication-and-cell-cycle-multiple-choice-practice","Unit 4 - Cell Communication and Cell Cycle - Multiple Choice Practice","","Unit 4 covers core concepts in cell communication and the cell cycle, focusing on how cells exchange information and how signaling leads to specific outcomes. It explains signal transduction pathways, including pathway components, short- and long-distance signaling, cellular responses shaped by environmental conditions, and how structural changes in signaling molecules alter pathway activity. The unit also addresses feedback mechanisms for homeostasis and the sequence and regulation of the cell cycle via checkpoints, including impacts of disruptions.",{"@graph":69,"@context":121},[70,84,104],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/unit-4-cell-communication-and-cell-cycle-multiple-choice-practice/457730/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":98,"encodingFormat":97,"isAccessibleForFree":99,"interactionStatistic":100},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/unit-4-cell-communication-and-cell-cycle-multiple-choice-practice/457730.png","ImageObject",300,407,{"name":92,"@type":93},"Stanford","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-09-30",true,{"@type":101,"interactionType":102,"userInteractionCount":4},"InteractionCounter",{"@type":103},"ViewAction",{"@type":105,"mainEntity":106},"FAQPage",[107,113,117],{"name":108,"@type":109,"acceptedAnswer":110},"What determines how cells communicate over short and long distances in this unit?","Question",{"text":111,"@type":112},"Cells communicate by using signals that trigger gene expression and other cellular changes. The unit emphasizes that distance changes can still be mediated through signaling pathways that transmit information and produce responses.","Answer",{"name":114,"@type":109,"acceptedAnswer":115},"How does a signaling pathway produce a specific cellular response?",{"text":116,"@type":112},"A signaling pathway uses identifiable components that convert a signal into changes inside the cell. The unit also links the response to the environment and to how pathway components function together.",{"name":118,"@type":109,"acceptedAnswer":119},"How do apoptosis and cell cycle checkpoints relate to developmental changes and regulation?",{"text":120,"@type":112},"Apoptosis remodels developing tissue by regulated cell death during forelimb digit formation. Cell cycle checkpoints regulate when progression occurs, helping maintain proper timing and preventing harmful disruption effects.","https://schema.org",{"og:url":83,"og:type":123,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":125,"canonical":83},"index,follow",{"doc_id":127,"site_id":62},457730,1790750264,{"code":4,"msg":5,"data":130},{"doc_id":127,"user_id":131,"nickname":92,"user_avatar":132,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":133,"file_id":134,"file_url":135,"file_type":136,"file_size":137,"view_count":4,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":52,"language":138,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":139,"faqs":140,"seo_title":141,"seo_description":67,"update_tm":128,"read_time":142},2336477552062,"https://ap-avatar.wpscdn.com/davatar_994ba38a5ba835b3df7d355c54d3ed8d","Unit 4: Cell Communication and Cell Cycle  \n\n| Topic | Learning Objective(s) |\n| --- | --- |\n| 4.1\u003Cbr>Cell Communication | IST-3.A Describe the ways that cells can communicate with one another. |\n|  | IST-3.B Explain how cells communicate with one another over short and\u003Cbr>long distances. |\n| 4.2 Introduction to Signal\u003Cbr>Transduction | IST-3.C Describe the components ofa signal transduction pathway. |\n|  | IST-3.D Describe the role of components ofa signal transduction pathway in producing a cellular response. |\n| 4.3 Signal Transduction | IST-3.E Describe the role of the environment in eliciting a cellular response. |\n|  | IST-3.F Describe the different types of cellular responses elicited by a signal\u003Cbr>transduction pathway. |\n| 4.4\u003Cbr>Changes in Signal Transduction Pathways | IST-3.G Explain how a change in the structure of any signaling molecule affects the\u003Cbr>activity of the signaling pathway |\n| 4.5\u003Cbr>Feedback | ENE-3.A Describe positive and/ or negative feedback mechanisms. |\n|  | ENE-3.B Explain how negative feedback helps to maintain homeostasis |\n|  | ENE-3.C Explain how positive feedback affects homeostasis. |\n| 4.6\u003Cbr>Cell Cycle | IST-1.B Describe the events that occur in the cell cycle. |\n|  | IST-1.C Explain how mitosis results in the transmission of chromosomes from one\u003Cbr>generation to the next. |\n| 4.7 Regulation of Cell Cycle | IST-1.D Describe the role of checkpoints in regulating the cell cycle. |\n|  | IST-1.E Describe the effects of disruptions to the cell cycle on the cell or organism. |\n\nMultiple Choice Practice  \n1. Anabaena is a simple multicellular photosynthetic cyanobacterium. In the absence of fixed nitrogen, certain newly developing cells along a filament express genes that code for nitrogen-fixing enzymes and become nonphotosynthetic heterocysts. The specialization is advantageous because some nitrogen-fixing enzymes function best in the absence of oxygen. Heterocysts do not carry out photosynthesis but instead provide adjacent cells with fixed nitrogen, in exchange receiving fixed carbon and reduced energy carriers.  \nAs shown in the diagram above, when there is low fixed nitrogen in the environment, an increase in the concentration of free calcium ions and 2-oxyglutarate stimulates the expression of genes that produce two transcription factors (NtcA and HetR) that promote the expression of genes responsible for heterocyst development. HetR also causes production of a signal, PatS, that prevents adjacent cells from developing as heterocysts.  \nBased on your understanding of the ways in which signal transmission mediates cell function, which of the following predictions is most consistent with the information given above?  \na. In an environment with low fixed nitrogen, treating the Anabaena cells with a calcium-binding compound should prevent heterocyst differentiation.  \nb. A strain that overexpresses the patS gene should develop many more heterocysts in a low fixed nitrogen environment.  \nc. In an environment with abundant fixed nitrogen, free calcium levels should be high in all cells so that noheterocysts develop.  \nd. In environments with abundant fixed nitrogen, loss ofthe hetR gene should induce heterocyst development.  \n2. The diagram below shows a developing worm embryo atthe four-cell stage. Experiments have shown that when cell 3 divides, the anterior daughter cell gives rise to muscle and gonads and the posterior daughter cell gives rise to the intestine. However, if the cells of the embryo are separated from one another early during the four-cell stage, no intestine will form. Other experiments have shown that if cell 3 and cell 4 are recombined after the initial separation, the posterior daughter cell of cell 3 will once again give rise to normal intestine.  \nWhich of the following is the most plausible explanation for these findings?  \na. A cell surface protein on cell 4 signals cell 3 to induce formation of the worm’s intestine.  \nb. The plasma membrane of cell 4 interacts with ","cbCaikMVbY2w9iL9","https://ap.wps.com/l/cbCaikMVbY2w9iL9","pdf",330016,"English","# 4.1 Cell Communication\n# 4.2 Introduction to Signal Transduction\n# 4.3 Signal Transduction\n# 4.4 Changes in Signal Transduction Pathways\n# 4.5 Feedback\n# 4.6 Cell Cycle\n# 4.7 Regulation of Cell Cycle\n# Multiple Choice Practice","[{\"question\":\"What determines how cells communicate over short and long distances in this unit?\",\"answer\":\"Cells communicate by using signals that trigger gene expression and other cellular changes. The unit emphasizes that distance changes can still be mediated through signaling pathways that transmit information and produce responses.\"},{\"question\":\"How does a signaling pathway produce a specific cellular response?\",\"answer\":\"A signaling pathway uses identifiable components that convert a signal into changes inside the cell. The unit also links the response to the environment and to how pathway components function together.\"},{\"question\":\"How do apoptosis and cell cycle checkpoints relate to developmental changes and regulation?\",\"answer\":\"Apoptosis remodels developing tissue by regulated cell death during forelimb digit formation. Cell cycle checkpoints regulate when progression occurs, helping maintain proper timing and preventing harmful disruption effects.\"}]","Unit 4 - Cell Communication and Cell Cycle - Multiple Choice Practice | PDF",25]