Cervical cancer develops in a woman's cervix (the entrance to the uterus from the vagina). Almost all cervical cancer cases (99%) are linked to infection with high-risk human papillomaviruses (HPV), an extremely common virus transmitted through sexual contact.
<h2>
Answer:</h2><h2>
<em>Root</em><em> </em><em>is</em><em> </em><em>not</em><em> </em><em>the</em><em> </em><em>major</em><em> </em><em>parts</em><em> </em><em>of</em><em> </em><em>bulb</em><em>.</em></h2>
Explanation:
<em>h</em><em>o</em><em>p</em><em>e</em><em> </em><em>i</em><em>t</em><em> </em><em>h</em><em>e</em><em>l</em><em>p</em><em> </em><em>y</em><em>o</em><em>u</em><em />
Answer:
In addition, a larger cell is less efficient in moving nutrients and waste materials across the cell membrane. - Asexual reproduction is the production of genetically identical offspring from a single parent. During the cell cycle, a cell grows, prepares for division, and divides to form two daughter cells.
Explanation:
Answer: A
Explanation:The Trp operon is responsible for synthesis of the amino acid trytophan when it is not available in the cellular environment.
When the tryptophan is plentiful, a repressor protein binds to two molecules of tryptophan.
Thiss repressor-tryptophan complex binds to the trp operator. This binding prevents the binding of RNA polymerase, so the operon is not transcribed, and no new trptophan is produce.
On the other hand, when tryptophan levels are reduced, the inactive repressor will not bind the tryptophan operator so the operon is transcribed.
Regulation of the trp operon is determined by the concentration of tryptophan; when adequate tryptophan is present in the growth medium, there is no need for tryptophan biosynthesis.
Transcription is turned off when a high concentration of tryptophan is present, and is turned on when tryptophan is absent. The regulatory signal is the concentration of tryptophan itself.
Therefore in the absence of tryptophan, the inactive repressor cannot bind trpO, so operon gene transcription occurs.
