Bacterial spores are formed

Question

BlackTom AI · Accepted Answer

The prompt asks about the formation of bacterial spores and provides several possible purposes to evaluate. 
Option 1: 'As a means of reproduction' — Bacterial spores are not used for reproduction. They are dormant, highly resistant structures formed to survive adverse conditions; the main reproductive process is binary fission, not spore formation. This makes the statement incorrect. 
Option 2: 'To change from gram-positive to gram-negative' — Spore formation does not alter the Gram stain characteristics of a bacterium. The Gram reaction depends on cell wall properties, which spores do not convert. Thus this option is factually wrong. 
Option 3: 'To make the bacteria more toxic' — Spore formation does not increase toxin production or virulence in a way that would be described as making the bacterium more toxic; the purpose of spores is survival under stress, not enhanced toxicity. This is a misconception about function. 
Option 4: 'As a survival mechanism' — This option aligns with the established biological role of endospores: a dormant, highly resistant form that allows bacteria to endure extreme heat, dryness, radiation, and nutrient deprivation until conditions improve. Therefore, this is the correct interpretation of why spores are formed. 
In summary, the incorrect options misattribute spore formation to reproduction, cell-wall changes, or toxin enhancement, while the correct understanding centers on survival through unfavorable conditions. The emphasis on dormancy and resistance underpins the spore’s biological purpose.

Bacterial spores are formed单项选择题

类似问题

A zoosporangium is the same as a sporangium.

What was the world's first widely adopted biodiversity policy?

The aim of the Paris Agreement is to ensure that the earth’s preindustrial temperature is not exceeded by more than º Celsius.

The IPCC's mission is to Blank ______.

Why have most international agreements for environmental protection been based on the honor system?

As was exhibited with the Montreal Protocol and the encouragement of reduced CFC production, trade can be an effective tool to compel compliance with international treaties.

The Stockholm Declaration and UNEP were the result of the Blank ______ first conference on the Human Environment in 1972.

In addition to the direct mission of the Convention on International Trade in Endangered Species (CITES), why was CITES so important?

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单