Skin,mouth and sometimes they have gills which they absorb oxygen
The X-gal medium is suitable for detection of gene regulation of the lack operon gene. The media turns from white to blue in the presence of beta-galactosidase, a gene product of lacZ. Beta-galactosidase cleaves lactose into galactose and glucose. Utilisation of lactose as an energy source by Escherichia occurs when there shortage of glucose in the environment.
Answer:
The big bang theory is what is believed to have made the universe
Explanation:
Answer:
A. commensalism
Explanation:
commensalism is an association between two organisms in which one benefits and the other derives neither benefit nor harm.