Explain the composition and use of minimal medium in the study of bacterial genetics
What will be an ideal response?
Minimal medium consists of an organic carbon source such as glucose or lactose and a variety of inorganic ions: Na+, K+, Mg++, Ca++, and NH4+. It is useful in isolating bacterial strains (auxotrophs) that are incapable of synthesizing more complex nutritional requirements.
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What is the main reason that the field of conservation biology has developed?
A. the consolidation of multiple fields of science into one in an attempt to be more efficient B. as a means of monitoring the stability of ecosystems C. humans looking for new methods of obtaining resources from the natural environment D. the current rates of extinction on Earth due to human-related factors
This behavioral ecologist pioneered the study of seagull nesting behavior.
A. von Frisch B. Wilson C. Lorenz D. Tinbergen
The process of filtration can be a(n)
A. disinfectant method. B. sterilizing method. C. sanitization method. D. antiseptic procedure. E. ineffective method for removing microbes.
Firewood is made up of cellulose, which is a polymer of glucose molecules. When burning, heat and light are given off, indicating that a(n) reaction is occurring.
A. potential energy B. endergonic C. equilibrium D. kinetic energy E. exergonic