Answer: the parasympathetic system controls body rest and digestion response, and the autonomic nervous system controls cardiovascular, and excretory systems.
Explanation:
The temperature is rising which makes the Artic and Antarctic ice melt, rising the sea levels.
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Answer:
E. Two of the statements above are correct i.e. options B and C
Explanation:
Cardiac muscles, also known as myocardium, are one of the three types of muscles found in the heart (the other two being skeletal and smooth muscles). Cardiac muscle cells are striated and branched in structure, with only one nucleus located centrally i.e. mono-nucleated.
Unlike the skeletal muscles, cardiac muscles are involuntary muscles controlled by certain parts of the brain. The cells that make up the cardiac muscles are connected to one another by structures called intercalated discs. Also, cardiac muscle cells contract spontaneously i.e. internally. Hence, options B and C are correct
The best answer is: introducing exotic species into
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new environments. This can be actually bad, as new species can actually reduce the biodiversity in the environments to which they're introduced</span> , such when cats hunt indigenous birds.
I was a bit thinking about the last option too: making sure local people benefit from conservation efforts.
This is not one of the classical goals of the conservation efforts, but since the previous one is definitely correct, i don't this one is. (it's not that it's not a goal, but it isn't a main focus)
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.