Question

Axenic culture means

• A. Study of characteristics of a culture, in an environment of other living organisms
• B. Study of characteristics of a culture, in an environment free of other living organisms
• C. Study of characteristics of a culture, of living organisms without environment effect
• D. Study of characteristics of a culture, in absence of nutrients

Hint:

• Axenic culture = Pure culture.
• Contains only one known species, strain, or type of microorganism.
• Free from contamination by any other living organisms.
• Essential for studying the properties of a specific microorganism.

Answer 1

The Correct Option is B

An axenic culture (also known as a pure culture in microbiology) is a culture that contains only a single species, strain, or variety of an organism, and is entirely free of all other contaminating organisms. The term "axenic" means "without foreign guests" or "without strangers." Let's analyze the options:
(a) "...in an environment of other living organisms": This describes a mixed culture or a contaminated culture, not axenic.
(b) "...in an environment free of other living organisms": This correctly describes an axenic culture. It refers to the culture itself being pure (one type of organism) and uncontaminated by other living organisms.
(c) "...of living organisms without environment effect": This is too general and doesn't capture the essence of "axenic" which is about purity from other organisms.
(d) "...in absence of nutrients": A culture requires nutrients to grow; absence of nutrients would mean no growth. This is unrelated to being axenic.
Therefore, axenic culture means a culture that is free of other living organisms (i.e., a pure culture). The option implies studying this pure culture. \[ \boxed{\text{Study of characteristics of a culture, in an environment free of other living organisms}} \]