Answer:
The correct answers are option A. "Maltose removes a repressor from an operon with an efficient promoter" and option C. "Maltose causes an activator to bind an operon with an inefficient promoter".
Explanation:
Two ways at which maltose operon works in the presence of maltose is by maltose removing a repressor from an operon with an efficient promoter and by maltose causing activator to bind an operon with an inefficient promoter. Maltose removes the repressor malR (Maltose operon transcriptional repressor) with an efficient promoter called malE. Additionally, maltose causes an activator to bind an operon with an inefficient promoter known as malT.
Answer:
B
Explanation:
For the body to maintain stable conditions for optimal working of biochemical activities in cells, then it will require to constantly readjust any imbalances and offshoots that occur (which is the case regularly) through a positive and negative feedback mechanism. An example is blood sugar. After food intake, the blood sugars tend to rise a bit and the body produces more insulin to communicate to the cells to take up the excess glucose from the blood and store it. During starvation when the blood sugar tends to drop below normal levels, the level of insulin is reduced and that of glucagon is heightened. This causes the stored glucose to be released into the blood to restore homeostatic levels. This kind of balancing act happens with many other variables in the body.
Answer:
if im right, autotrophs are ingested by a heterotroph
they use chemical energy for the process of photosynthesis
carcass consuming saprophytes
Explanation:
It happens when the moon is in the earth's shadow
And sun moon and earth is completely aligned
B. because once is absorbs light it can begin to produce atp and nadph
