Answer:
b) Operons for coordinated gene expression
Explanation:
Operon refers to a unit of genetic function and is mainly found in bacteria and phages. An operon consists of a promoter, an operator, and a coordinately regulated cluster of structural genes. The genes of an operon code for proteins or enzymes that mostly function in a common pathway. It allows a single promoter and operator or any other regulatory sequence to regulate the expression of functionally related genes.
For instance, lac operon consists of three structural genes that code for the enzymes involved in the catabolism of lactose sugar. The operon is expressed only when lactose is available in the medium. This pattern of gene regulation is not found in eukaryotes.
The correct answer is: because the complex organic chemicals of life can only be produced within and by the direction of a cell.
Creation scientists are supporting the creationism which is religious belief. Creationists believe that life is formed by divine creature which is opposite to all scientific conclusions. Creationists base their beliefs on a fundamentalist reading of religious texts in Bible, Quran, Genesis..
The group of species with features best suited to its environment is more likely to survive
note: try and search for the peppered moth experiment (I think that is what it's called)
Answer:
Food provides the glucose that is a reactant in cellular respiration.
