Ecology !! Is the study of living things and their environment (:
Answer:
d. Genes that play a role in the same metabolic pathway are organized into an operon.
Explanation:
In prokaryotic organisms like bacteria, polycistronic mRNAs exist which means that each gene does not have a separate promoter of its own. In fact many genes are under the control of a single promoter. These genes being a part of same metabolic pathway are organized into an operon. For example, lac operon and tryptophan operon. In lac operon, three genes named as β-galactosidase, permease and transacetylase are expressed under a single promoter which is known as lac promoter.
In contrast to this, in eukaryotes the mRNAs are monocistronic i.e. only a single gene is controlled under a single promoter.
Carbon is very important for life. Especially plants. So, if you were to find carbon and nitrogen....there's life.
The alarm stage<span>, the resistance </span>stage<span>, and the exhaustion </span>stage<span>. ... The changes that occur in the alarm </span>stage<span> prepare ypu to either "fight" the stressor or "take flight" and escape. Thus, this inital </span>reaction<span> of the</span>body<span> to </span>stress<span> is called the fight-or-flight </span>response<span>.</span>