Expert systems that are in use include the following examples: CaDet(Cancer Decision Support Tool) is used to identify cancer in its earliest stages. DENDRALhelps chemists identify unknown organic molecules. DXplainis a clinical support system that diagnoses various diseases. MYCINidentifies bacteria suc...
根据“Some bacteria can make the immune system (免疫系统) work better and help the body resist diseases.”可推知,一些细菌可以使免疫系统更好地工作,帮助身体抵抗疾病,故此处的 “resist”是“抵抗,阻止”的含义,与“prevent”意思相近。故选D。 (4)题详解: 细节理解题。根据“If you ever see food...
What are some examples of bacteria that can form an endospore? How long is it generally viable? Suggest three ways in which food might become contaminated by harmful bacteria. Which portions of a bacterial cell aid the ability of a bacterium to cause infections?
What two types of microorganisms are classified as prokaryotes? What is bacteria and what does it do? Give some examples of bacteria. What makes bacteria different from other organisms? Why is bacteria not classified as a plant? What are the characteristics of true bacteria?
"Some [bacteria]aggregate so closely as to mimic a multicellular organism" (Gina Kolata). "The first stars began to form when hydrogen and helium gas left over from the Big Bang aggregated into dense clouds" (Paul Davies). Aggregate A mass, assemblage, or sum of particulars; something cons...
What are some examples of Anaerobic Respiration? Describe under what conditions you might expect your cells to undergo anaerobic respiration. Be specific as to why these conditions would prevent normal cellular respiration to proceed. What product is produced under anaerobic conditions and is it harmful...
Why are some people successful and others aren?t? What?sthesecretofsuccess? 16 ManyofGladwell?sideasappearinhissocialpsychologybestsellerOutliers. 17 Gladwellthinksthat thisisjustanexcusefornottrying...andifyoureally wanttobegoodatsomething.youhavetoworkatit. “Practiceisn?tthethingyoudoonceyou?rego...
When you read the word “bacteria (细菌)”, what’s the first thing that comes to mind? Maybe diseases. That would be fair—some bacteria can make people ill. But most bacteria are not harmful. Bacteria perform many useful jobs almost everywhere on Earth. For example, the bacteria that ...
Capsule of a Bacteria Instead of viscous covering, some bacteria are surrounded by amorphous/paracrystalline colloidal protein materials called theslime layer. Functions ofCapsule Aids in adherence Prevents from desiccation Confer resistance against phagocytosis ...
Bacteria (singular: bacterium) are unicellular, prokaryotic organisms under the kingdom Monera in the Whittaker system. Bacteria can be both beneficial and detrimental to humans. Humans have a natural microbiota in the skin, upper respiratory tract, and gut. Despit...