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Gram positive bacteria

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Gram positive bacteria

相似考题

1.In most people who breathe in TB bacteria and become infected, the body is able to fight the bacteria to stop them from growing. ()此题为判断题(对，错)。

2.在Gram染色中，使Gram阴性菌着色的染料是A、结晶紫B、碱性品红C、酸性品红D、中性红E、亚甲蓝

3.Gram stain

4.When a person breathes in TB bacteria, the bacteria can settle in the stomach and begin to grow. ()此题为判断题(对，错)。

更多“Gram positive bacteria”相关问题

  • 第1题：

    化疗性腹泻的病原学检查,正确的是()

    A.粪涂片：Gram’s(-)杆菌减少，Gram’s(+)杆菌和球菌增多

    B.粪涂片：Gram’s(+)杆菌减少，Gram’s(+)杆菌和球菌增多

    C.粪涂片：Gram’s(-)杆菌增加，Gram’s(+)杆菌和球菌增多

    D.粪涂片：Gram’s(+)杆菌减少，Gram’s(-)杆菌和球菌增多

    E.粪涂片：Gram’s(-)杆菌减少，Gram’s(-)杆菌和球菌增多


    答案：A

  • 第2题：

    第三组：

    The sewage treatment system must be capable of discharging an effluent that comes within the limits of the tests. Sewage can be treated biologically so that it may be discharged with minimal damage to ecosystem. Biological treatment involves the use of living organisms to treat the sewage within the sewage treatment plant so the liquids and sludge discharged are within the standards specified.

    Biological treatment plants are usually built up as a module and consist of various sections.

    Waste matter collected from the ships sanitary appliances is led through a sanitary piping system to the treatment module. The solid matter is broken up by passing it through a screen or a series of revolving cutters. The broken up solid material, together with the waste liquid, passes into a tank containing bacteria which require oxygen and a nutrient to propagate. The nutrient is contained in the solid waste material, and oxygen is supplied by bubbling compressed air through the broken up waste. The propagated bacteria change the waste material into a sludge by aerobic digestion. The sludge is finally treated to kill the coliform. bacteria before it is passed overboard.

    When a biological sewage plant is started up, such as when activating a new ship or after cleaning out the tank, a pellet containing bacteria is introduced into the tank. It takes approximately one week for the bacteria to propagate and make the system fully effective. The choice of sanitary appliance cleaners requires extreme care, as many cleaners are toxic to the active bacteria. Once a biological sewage plant is made active it should not be shut down. If it is it will have to be reactivated again because the bacteria will die without a supply of nutrients and oxygen.

    Bacteria that require oxygen for their survival are referred to as aerobic. Aerobic bacteria are normally used in ships&39; sewage treatment equipment. Other forms of bacteria that do not require oxygen are referred to as anaerobic. Anaerobic bacteria are used in shore based sewage treatment works where methane is obtained as a by-product for use as fuel.

    This passage is mainly about

    A.sewage treatment methods

    B.the various sections of a sewage treatment plants

    C.biological sewage treatment system

    D.how the sewage treatment plants are started up


    正确答案：C

  • 第3题：

    革兰氏染色法（Gram stain）


    正确答案: 一种鉴别染色法，当用脱色剂处理时，根据保留或失去原始着色剂（结晶紫）与否，细菌被划分为革兰氏阳性或革兰氏阴性。

  • 第4题：

    被动体位（positive position）


    正确答案: 病人不能自己调整和变换肢体和躯干的位置，见于极度衰弱和意识丧失者

  • 第5题：

    自生固氮菌 free-living nitrogen fixing bacteria


    正确答案:独立生活时能将空气中氮气还原成氨的各属、种细菌的总称。

  • 第6题：

    细菌生理群 physiological group of bacteria


    正确答案: 按生理功能划分的细菌类群。

  • 第7题：

    名词解释题
    喷菌现象（bacteria exudation，BE）

    正确答案： 由细菌侵染所致病害的病部，无论是维管束系统受害的，还是薄壁组织受害的，镜检时都可以在徒手切片中看到有大量细菌从病部喷出的现象喷菌现象为细菌病害所特有，是区分细菌病害与真菌、病毒病害最简便的手段之一。
    解析： 暂无解析

  • 第8题：

    填空题
    If the soil’s bacteria and other microorganisms are also eliminated, the rainforest is destroyed.____

    正确答案： D
    解析：
    根据题干信息可以定位到D段“But if the soil’s bacteria and other microorganisms, which break down the nutrient-rich organic matter that tumbles to the dark forest floor, are also eliminated, the rainforest is destroyed.”，故匹配段落为D段。

  • 第9题：

    单选题
    Cooking is an effective way in preserving food because _____.
    A

    cooking always kills the bacteria in food

    B

    cooking can make the food become dry

    C

    the fire in cooking can kill bacteria

    D

    under the right conditions, cooking will kill bacteria


    正确答案： A
    解析：
    根据第二段首句Cooking will usually kill bacteria if the temperature is high enough and long enough.可知，在一定的条件下(即温度够高、时间够长的话)，烹饪法能杀死细菌，因此是一种保存食物的有效方法。

  • 第10题：

    单选题
    In order to culture and propagate enough bacteria to treat the body and galley wastes（）
    A

    a new bacteria colony should be put into the plant in advance

    B

    the disinfection chemicals should be always used

    C

    the air blower should be started and keep running in advance

    D

    the nutrient for bacteria should put into plant in advance


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    Many people are against the use of chemicals to preserve food because ______.
    A

    chemicals are not necessary for preserving food

    B

    a small quantity of bacteria in food is good to people

    C

    those chemicals that kill bacteria may not be good to people

    D

    there are other better ways to preserve food


    正确答案： A
    解析：
    根据文章最后两句Some people oppose the use of chemicals in food. They say that these chemicals may harm people if the chemicals can harm bacteria.可知，人们反对使用化学物质来保存食物的原因是这些化学物质可能对人有害，C)是对这句话的同义转述。

  • 第12题：

    名词解释题
    Bacteria, eubacteria (真细菌)

    正确答案： 除古细菌以外的所有细菌均称为真细菌。最初用于表示“真”细菌的名词主要是为了与其他细菌相区别。
    解析： 暂无解析

  • 第13题：

    positive absorb


    正确答案：positive absorb：正吸附表面活性剂在低浓度时主要在水溶液表面发生聚集且亲水基团朝向水而亲油基团朝向空气的现象称为正吸附。
    positiveabsorb：正吸附,表面活性剂在低浓度时,主要在水溶液表面发生聚集,且亲水基团朝向水而亲油基团朝向空气的现象称为正吸附。

  • 第14题：

    Any action taken to avoid collision shall，if the circumstances of the case admit，______.

    A.be positive

    B.be positive and made in ample time

    C.be positive，made in ample time and with due regard to the observance of good seamanship

    D.be positive，made in ample time，with due regard to the observance of good seamanship and avoiding complying with local regulations


    正确答案：C

  • 第15题：

    喷菌现象（bacteria exudation，BE）


    正确答案: 由细菌侵染所致病害的病部，无论是维管束系统受害的，还是薄壁组织受害的，镜检时都可以在徒手切片中看到有大量细菌从病部喷出的现象喷菌现象为细菌病害所特有，是区分细菌病害与真菌、病毒病害最简便的手段之一。

  • 第16题：

    纤维分解菌 cellulose-decomposing bacteria


    正确答案: 在不同生态条件下分解纤维素的微生物。

  • 第17题：

    细菌 bacteria


    正确答案: 单细胞不含叶绿素和细胞壁无纤维素成分的原核微生物。

  • 第18题：

    Bacteria, eubacteria (真细菌)


    正确答案: 除古细菌以外的所有细菌均称为真细菌。最初用于表示“真”细菌的名词主要是为了与其他细菌相区别。

  • 第19题：

    名词解释题
    溶源性细菌（1ysogeniec bacteria）

    正确答案： 细胞中含有以原噬菌体状态存在的温和噬菌体基因组的细菌。
    解析： 暂无解析

  • 第20题：

    单选题
    In a storm，the windward lines of a ship’s mooring system provide（）.
    A

    a positive righting moment

    B

    an increase in KM

    C

    a negative restoring force

    D

    a positive restoring force


    正确答案： A
    解析： 暂无解析

  • 第21题：

    名词解释题
    革兰氏染色法（Gram stain）

    正确答案： 一种鉴别染色法，当用脱色剂处理时，根据保留或失去原始着色剂（结晶紫）与否，细菌被划分为革兰氏阳性或革兰氏阴性。
    解析： 暂无解析

  • 第22题：

    名词解释题
    细菌的耐药性 （resistance of bacteria）

    正确答案： 又称抗药性，一般是指细菌与药物多次接触后，对药物的敏感性下降甚至消失，致使药物对耐药菌的疗效降低或无效。细菌对抗生素（包括抗菌药物）的耐药机制主要有四种：
    （1）使抗生素分解或失去活性；
    （2）使抗菌药物作用的靶点发生改变；
    （3）细菌细胞膜渗透性的改变或其它特性的改变使抗菌药物无法进入细胞内；
    （4）细菌产生药泵将进入细胞的抗菌素泵出细胞。
    解析： 暂无解析

  • 第23题：

    问答题
    试述细菌革兰氏（Gram）染色原理？

    正确答案： 革兰氏阳性菌G+和革兰氏阴性菌G-两类细菌细胞壁结构组成上有明显差异导致其染色结果不同。
    革兰氏阳性菌G+经过结晶紫初染，碘液媒染，菌体胞壁被染成紫色，后经酒精脱色，由于其细胞壁较厚，肽聚糖结构层次多，且交联程度大，网孔径因酒精脱水而缩小，细胞壁内形成的结晶紫—碘复合物被阻留于细胞壁内，表现为不被脱色，后虽经过复染，最终染色结果仍然为紫色。
    革兰氏阴性菌G-经过结晶紫初染，碘液媒染，菌体胞壁被染成紫色，后经酒精脱色，由于其细胞壁较薄，肽聚糖结构层次少，且交联程度低（松疏），细胞内类脂成分含量较大，网孔径因酒精溶解脂类作用而增大，细胞壁内形成的结晶紫—碘复合物被洗脱，后经过红色染料复染，最终染色结果为红色。
    解析： 暂无解析

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