Answer:
B. Gives similar scores every time it is used
A. the magnitude of an earthquake
Answer;
-The resources for the amount of organisms present will decrease as a result of land development. Overcrowding will result, which will lead to organisms either migrating to find resources or dying due to insufficient resources.
Explanation;
-Land development activities such as agriculture, clear cutting, peat mining, and the planting of forest plantations on wetlands can affect the hydrologic behavior of these ecosystems by affecting their water storage and release patterns on the landscape.
I believe the correct answer from the choices listed above is option C. <span>If given an extremely long time, nonliving chemicals will still be nonliving. They will not gain some spirit as the days went by so they will always be nonliving. Hope this answers the question.</span>
a) when lactose is absent, the repressor is active, RNA Polymerase cannot bind to the promoter and the structural gene are not formed.
b) when lactose is present, the lac repressor is inactive, RNA Polymerase can bind to the promotor and the structural genes are formed.
Explanation:
The lac operon in E.coli has genes required for lactose metabolism.
It is expressed only when lactose is present in the medium and glucose is absent.
According to the glucose and lactose level the operon is switched on or off.
The lac repressor or allolactose and catabolite activator protein is present in lac operon.
Glucose is the primary source of energy but bacteria loves to fuel down lactose. To use lactose as an energy source lac operon works.
a) when lactose is absent, the repressor is active, RNA Polymerase cannot bind to the promoter and the structural gene are not formed.
b) when lactose is present, the lac repressor is inactive, RNA Polymerase can bind to the promotor and the structural genes are formed.
The lac repressor is a protein that inhibits transcription of lac operon in the absence of lactose.
