11 important organ systems
Answer:
This question lacks proper arrangements but one can understand and chip in the appropriate terms. The terms missing there in order, which answers the question are:
Nucleus
Transcription
RNA polymerase
mRNA
Ribosome
Explanation:
The cellular process being described in this question is GENE EXPRESSION, which is the expression of the information contained in the genetic material in order to produce useful gene products (proteins). The genetic material (DNA) is stored in the nucleus of eukaryotic cells. The first process of this gene expression called TRANSCRIPTION involves the copying of the information contained in the DNA into an RNA molecule.
Transcription is carried out by an enzyme called RNA polymerase, which synthesizes a complementary strand of mRNA from a DNA template. mRNA ia called messenger RNA and it acts as a conveyer/carrier of this information present on its nucleotides out of the nucleus into the cytoplasm, specifically the site of protein synthesis called RIBOSOME.
The RIBOSOME is a cellular organnelle where the other process of gene expression called TRANSLATION will occur.
The transcription of structural genes in an inducible operon occur (B) It starts when the pathway's substrate is present.
Inducible operon is the one which works only when the stimulus is received by an inducer, enhancer or a positive regulator. Inducible operon consists of one or more structural genes. The example of inducible operon is lac operon.
Substrate is a chemical substance upon which any enzyme acts. It is a starting material for any process to begin. In operons as well, substrate acts as an inducer for beginning the process of transcription. In lac operon, lactose itself acts as a substrate for the transcription of the m-RNA coding for enzyme β-galactosidase.
To know more about inducible operon, here
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The both build nests with the same items like hay and sticks. They also has similar call sounds specifically so they can call each other.
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