1) Sunlight, Water, Carbon dioxide
2) Starch, Oxygen
3) 'cause one's need can be fulfill only by other one.
Answer: 2. Catabolite Activator Protein (CAP) is active only in the absence of cAMP
Explanation:
E.coli's switch from glucose to lactose depends on the formation o<u>f complex </u>by cAMP and catabolite activator protein (CAP). (cGAP-CAP) T<u>he complex binds to a specific DNA sequence at the upstream of lac operon operator and promoter site receptacle to certain genes</u> .
This binding gives increase RNA polymerase binding and gene expression activation. The CAP binds to a promoter site in order to stimulate the promoter-associated genes.; for the process. <u>it alters its conformation, to become a genetic activator.</u>
<u> </u>The option 2 in the question is wrong. In absence of cCAMP, cCAMP-CAP complex cannot be formed, no binding will take place for gene activation, and therefore gene expression from the lac operon cannot take place.
Catabolites produced from the glucose break down inhibits the formation of signal molecule cCAMP. And therefore prevent activation of enzyme needed for lactose metabolism, even in presence of lactose Therefore E.coli will prefers glucose for energy source in presence of lactose, unless when glucose is not available
Explanation:
There are several different factors that control the primary productivity of energy and biomass flow. Energy flow is the amount of energy that moves through a food chain. The energy input, or energy that enters the ecosystem, is measured in Joules or calories. Accordingly, the energy flow is also called calorific flow.
<span>respond to their environment
grow and change
reproduce and have offspring
have a complex chemistry
maintain homeostasis
are built of structures called cells
<span>pass their traits onto their offspring</span></span>