Answer:
The E.coli bacteria utilize glucose and lactose as a substrate to produce various metabolites used to survive.
The bacteria use lac operon which represents a sequence of various genes aligned in a manner to use lactose as a substrate as the most favoured substrate is glucose.
The glucose metabolites regulate the transcription of the lactose operon as the presence of glucose prevent the production of cAMP which shuts off the lac operon even in the presence of the lactose.
When the glucose level is low in medium, the level of cAMP increase which binds with CAP and then activates the lac operon whereas when the glucose level is high, then the low level of cAMP does not activate the lac operon.
The element in which it is <span>is NOT a key element of having a healthy pregnancy is taking in drugs and alcohol in your body. This is because it can affect the infant inside the mother's womb and that it can result to many diseases of the baby.</span>
The answer is; opioids
These painkillers relieve pain by competing with neurotransmitters in binding neurotransmitter receptors in the synapse. However, they don’t induce an impulse hence block the receptors from neurotransmitters. This working principle, however, is also problematic because it causes slow breathing because the drugs calm nerve activity even that which controls your breathing.
Answer:
A per mineralized piece of wood is known as the "petrified wood."
Explanation:
The petrified wood are available in few parts of the world with variety of colors, which happens as a result of presence trace elements inside the mineral by which the petrified wood is made.It is also believed that they are the remaining of the fossils of terrestrial vegetation. It is made from tree or some tree like plants which have been undergone mineralization process. These woods are much heavier than the normal one.
Answer:1. The basic building block of all forms of life nucleus --cell
2. The rigid wall of plant cells that surrounds the cell membrane-- cell wall
3. The tiny body that contains chlorophyll --chloroplast
4. Carries the genes or inheritance units of a cell --chromosome
5. A protein and fat structure serving as a covering and enclosure for a cell -- membrane
6. The protoplasmic substance separate from the cytoplasm --nucleus
7. The organic substance making up the cells of all living things-- protoplasm
8. The protoplasmic unit of a cell -- protoplast
9. A cell storage body that increases in size with age--vacuole
Explanation;the cell is the basic unit of life. All living organisms are made up of cells.it is made up of the cell membrane and the protoplasm.the protoplasm is the content of the cell while the cell membrane Is the covering of the cell. Cell contains organelles within it which performs specific functions. These function are necessary for the proper functioning of the cell and the organism at large. A cell may be prokaryotic or eukaryotic. A prokaryotic cell usually lacks membrane bound organelles,such as the nucleus. Example of prokaryotes are bacteria and archaea.
Eukaryotes have membrane bound organelles. Examples are plant and animal cells. There are some difference in the plant and animal cell.for example, a plant cell may contain a vacuole, chlorophyll etc which are absent in animal cell.
An animal cell has centrioles which a plant cell lacks.