Parasitism is the symbiotic relationship where one organism is harmed while the other benefits
Answer:
Glycogen synthase is phosphorylated at only one site.
Explanation:
Glycogen synthase has multiple sites where phosphorylation can occur. Glycogen synthase may have 9 or more sites where it can be phosphorylated as a result of which it's activity is down regulated. It simply means that the regulation of this enzyme does not occur through binary on/off switching, in fact it's activity is modulated over a wide range in response to various signals.
In contrast to glycogen phosphorylase which gets activated when it is phosphorylated at it's serine residues, glycogen synthase gets inactivated by phosphorylation.
As soon as another enzyme GSK3β phosphorylates glycogen synthase, it gets inactivated as a result of which glycogen synthesis halts in the liver.
Answer:
The correct answer is C: "The secretory phase of the uterine (menstrual) cycle occurs when <em>progesterone stimulates the endometrium to prepare it for implantation".</em>
Explanation:
The luteal phase, also known as a <u>secretory phase </u>or postovulatory phase, has place immediately <em>after ovulation</em>, from 15th to 28th day, and it lasts <em>until the end of the menstrual cycle</em> when bleeding starts again.
During the secretory phase, the <em>follicle</em> in the ovary <em>produces </em><em>progesterone</em> to keep <em>preparing the uterus for a possible pregnancy</em>. If there is no fecundation, estrogen and progesterone levels fall as the follicle reduces. When this happens, the endometrial is eliminated as menstruation and a new cycle begins.
<em>If the ovule is fecundated, </em><em>it occurs implantation</em><em> </em>and follicles continue to produce progesterone and estrogen in high amounts to sustain the endometrial until the placenta is formed.
Because it pollutes the atmosphere and isn't a renewable source of energy
