I think it might be d ,c or a But I could be wrong
First of all, the sugar "athelose" is hypothetical therefore it does not exist and only serves the purpose of illustration. This is similar to the <em>lac </em>operon in bacteria that utilizes lactose as its energy source (in the absence of glucose).
In the presence of glucose, the <em>ath</em> operon (operon for athelose) is repressed because the regulatory gene for synthesizing the enzyme that can metabolize athelose is off (so the operon is off), because of the presence of an active repressor (can be glucose or a metabolite of glucose; any marker that denotes the presence of high glucose concentrations).
In the absence of glucose, the <em>ath</em> operon is activated because since glucose is absent, the active repressor is also absent and will turn the operon on; and subsequently, the gene encoding for the enzyme that metabolizes operon is turned on, as this will function to make the bacterium capable in using athelose as an energy source.
Answer: true
Explanation: why not it sounds right
is the division of a single entity into two or more parts and the regeneration of those parts to separate entities resembling the original.
