Answer:
B
Explanation:
All substances, whether living or nonliving are made up of atoms. Different combination of these atoms is what forms different molecules, elements, and compounds. An example is that carbon atom, which is the chief atom of life on earth, is also the main component that makes up nonliving substances such as diamond and graphite.
a. <span> dense vegetation helps filter out pollutants in the water. Plants that grow in wetlands remove nutrients and pollutants in the water, including rainwater</span>, waste water and runoff before it enters bodies of water.
Cell cycle is IPMAT +C I would say Metaphase but I can be mistaken pls recheck
Answer:
B -the absence of the inducer, but not in its presence
Explanation:
In positive repressible regulalor mechanisms transcription of the structural gene(s) occurs in the absence of the inducer because proteins are normally bound to the pertinent DNA segment. when an inhibitor is bound by the inducer, it is prevented from binding the DNA. which will the stops the activation and transcription of the structural genes.
Example of positive repressible regulator is Activator .
Regulating the rate of transcription is a mechanism of gene regulation leading to the productionn of more than one protein product from a single gene.