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单词 obligate anaerobe
释义

obligate anaerobe

英汉-汉英词典
专性厌氧菌
词组 | 习惯用语
您要查找的是不是：
    obligate aerobe [微] 专性需氧微生物
    obligate anaerobic bacterium 专性嫌气细菌
    ligate anaerobic bacteria 专性嫌气细菌
    obligate anaerobic bacteria 专性厌气细菌
obligate anaerobe 专性厌氧微生物；专性嫌气生物
obligate anaerobes 专性厌氧菌
原声例句
Osmosis-微生物

Clostridia, as a family, are obligate anaerobes, meaning that oxygen is toxic to them.

梭状芽胞杆菌科为专性厌氧，即氧气对其有毒害作用。

Osmosis-微生物

Alright, as a quick recap, Clostridium perfringens is a gram-positive, spore-forming, obligate anaerobe that resides in the soil.

得！我们快速复习一下：产气荚膜梭菌是革兰氏阳性、有芽孢的厌氧菌，通常居于土壤中。

中文百科

专性厌氧菌

图为5支培养有不同种类微生物的试管。试管内的培养基为巯基乙酸肉汤。 1中培养的是专性需氧微生物。因为它们不能进行发酵及无氧呼吸，所以它们浮在了氧含量最高的上层。 2中培养的是专性厌氧菌。因为它们体内因无过氧化氢酶等物质无法在有氧条件下存活，故浮在氧含量最低的下层。 3中培养的是兼性厌氧菌。它们既可以在有氧条件下也能够在无氧条件下生存，所以它们分布在试管培养基上的各处。但因为有氧呼吸较无氧呼吸能产生更多的ATP（三磷酸腺苷），故更多的菌体分布在上层。 4中培养的是微需氧微生物。它们不能进行发酵及无氧呼吸，也不能在高氧浓度环境中存活，故它们浮在试管中上层。5中培养的是耐氧厌氧生物。这种细菌不能进行有氧呼吸，但却可以在高氧浓度环境下存活，所以它们均匀地分布在试管培养基上各处。
一种专性厌氧菌：破伤风梭菌

专性厌氧菌是一类仅能进行无氧呼吸，且无法在正常大气（氧含量21%）等富氧环境下存活的微生物。这类生物对氧气的耐受力不同，部分专性厌氧菌可以在氧含量达8%的环境下存活，但有些专性厌氧菌则仅能在氧含量低于0.5%的环境下存活。值得注意的是，微需氧微生物虽然与专性厌氧菌一样不能在正常大气中存活（前者的生存环境中氧含量一般为2%-10%），但它的呼吸方式是有氧呼吸，而不是专性厌氧菌的无氧呼吸或发酵。

英语百科

Obligate anaerobe 专性厌氧菌

Aerobic and anaerobic bacteria canthioglycollate broth: 1: Obligate aerobes need oxygen because they cannot ferment or respire anaerobically. They gather at the top of the tube where the oxygen concentration is highest. 2: Obligate anaerobes are poisoned by oxygen, so they gather at the bottom of the tube where the oxygen concentration is lowest. 3: Facultative anaerobes can grow with or without oxygen because they can metabolise energy aerobically or anaerobically. They gather mostly at the top because aerobic respiration generates more ATP than either fermentation or anaerobic respiration. 4: Microaerophiles need oxygen because they cannot ferment or respire anaerobically. However, they are poisoned by high concentrations of oxygen. They gather in the upper part of the test tube but not the very top. 5: Aerotolerant organisms do not require oxygen as they metabolise energy anaerobically. Unlike obligate anaerobes however, they are not poisoned by oxygen. They can be found evenly spread throughout the test tube.

Obligate anaerobes are microorganisms killed by normal atmospheric concentrations of oxygen (20.95% O2). Oxygen tolerance varies between species, some capable of surviving in up to 8% oxygen, others losing viability unless the oxygen concentration is less than 0.5%. An important distinction needs to be made here between the obligate anaerobes and the microaerophiles. Microaerophiles, like the obligate anaerobes, are damaged by normal atmospheric concentrations of oxygen. However, microaerophiles metabolise energy aerobically, and obligate anaerobes metabolise energy anaerobically. Microaerophiles therefore require oxygen (typically 2-10% O2) for growth. Obligate anaerobes do not.

近义、反义、联想词
近义词
n.
anaerobe

英英词典
obligate anaerobe n.
  1. an organism that cannot grow in the presence of oxygen
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更新时间：2025/6/28 4:20:45