Answer:
Progesterone activates C-Mos, which phosphorylates maturation promotion factor (MPF)
Explanation:
Progesterone is a steroid hormone that is well known to be involved in embryogenesis, which is secreted by the corpus luteum. During meiosis I, steroid production is limited to progesterone. Moreover, the oocyte maturation factor Mos (cMOS) is kinase expressed in germ-line cells when it is activated by progesterone, where this factor controls oocyte maturation and the arrest at the metaphase of meiosis II by modulating the activity of the Maturation-promoting factor (MPF). This protein (MPF) is a cyclin-dependent kinase complex that promotes mitotic entry via phosphorylation of different proteins required during mitosis.
Answer:
Please find the explanation below
Explanation:
The lac operon is a unit containing structural genes and a single promoter in bacteria such as E.coli. A repressed gene is a gene in which the expression has been inhibited or prevented from occuring.
In E.coli, the lac operon contains three structural genes viz: lacZ, lacY and lacA, that codes for proteins capable of degrading lactose sugar for energy purposes. In the presence of lactose, the expression (transcription and translation) of these three lac genes occur normally.
However, in a scenario where lactose is absent in the bacterial cell, the expression of the lac gene in the lac operon is inhibited. This inhibition/repression is done by LAC REPRESSOR, which is a transcription factor/protein that binds to the OPERATOR region of the lac operon and prevents RNA polymerase (transcription enzyme) from binding to the PROMOTER region.
Once RNA polymerase is prevented from binding to the promoter, transcription (gene expression) does not occur. Hence, in the absence of lactose sugar, the lac operon is a repressed gene.
The client is experiencing Guilt one of kübler-ross' stages
of grief. Fear may prompt some individuals to cry, but
crying is more likely to accompany a deep sense of guilt. Denial and rejection
are less likely to prompt an individual to cry frequently.
I believe D would be the best choice.