Answer:
The answer is option C.
Nerves instruct glands to send out hormones.
Hope this helps.
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.
C, Experimentation
Hypothesis would need to be tested using an experiment and the hypothesis is the general question.
Experimentation helps a scientist figure out whether or not their ideas, theories, and hypothesis are supported
Answer:
The organism halfway up is the evolutionary ancestor of the one at the top of the branch. The one halfway up shares some characteristics with the one on the top. Hence the connection in the diagram.
Explanation:
A branching tree diagram is a set of groups within groups, with the organisms at the bottom having the fewest shared characteristics and the ones at the top having the most.
Hi!
A nerval impulse sends an impulse to a muscle or gland, enabling it to respond.
Hope this helps! Good luck!