Answer:
c. binds to allolactose and becomes inactive, allowing lac gene expression to occur.
Explanation:
Interaction between allolactose and repressor leads to allosteric repulsion which makes repressor inactive leading to the lac gene expression. This is the reason why allolactose is known as the inducer of lac operon becasue it causes gene expression in lac operon.
In the absence of allolactose, the repressor binds the operator and does not allow RNA polymerase to do transcription.
Osmosis. Cell membranes are "selectively permeable", where water is able to cross the cell membrane, but things that are dissolved in the water (solutes) are not. There are also small proteins called aquaporins which are designed to channel the movement of water across a cell membrane. You have to remember that water will move to achieve an equal solute concentration with that exists outside of the cell. A Hypotonic solution means that the liquid outside of the cells has LESS solutes in it than the cell does. Cells will take up water to match the low solute concentration outside the cells. A Hypertonic solution will have MORE solutes than the cell, and the cell will lose water to match the concentration outside the cell. Cells in a hypertonic solution will shrivel up, and cells will take up so much fluid in a hypotonic solution that they may burst.
Explanation:
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Answer:
When a mother has active genital herpes, about <u><em>one fourth </em></u>of children who are delivered through the infected birth canal become brain damaged.
Explanation:
Genital herpes can be described as a sexually transmitted disease which is caused by Herpes Simplex Virus ( HSV).
The Herpes infection can be passed from the mother to the unborn child before birth but commonly it is passed on to the child at the time of delivery. Infact, studies have shown that about one fourth of children who are delivered through the infected birth canal become brain damaged.
