The lac repressor protein is bound to the operator region of the lac operon when there is no lactose in the medium. When introduced in lactose, it binds to an allosteric site on the repressor causing its to change conformation and release from the operator. This allows the polymerase that is bound to the promoter region to proceed transcription of the lac operon genes (LacZ, Lac A, and Lac Y). Translation of these genes forms enzymes that enable the organism to break down lactose for energy.
Answer:
Ummm I am doing the same assignment as you so I do not even know it lol
Explanation:
An intron is a non-coding region of DNA. During alternative splicing, introns are removed.
- During eukaryotic transcription, a fragment of DNA (e.g., a gene) is used as a template to synthesize a complementary RNA sequence, usually a precursor mRNA (pre-mRNA).
- Subsequently, this pre-mRNA is processed by a mechanism called alternative splicing in order to produce a mature mRNA which is then used as template to synthesize a protein by a process called translation.
- During alternative splicing, non-coding regions of a gene called 'introns' are removed, where coding regions called 'exons' are spliced back together.
- If a cell transcribed and translated a gene’s intron by mistake, then additional amino acids would be inserted into the protein and therefore the resulting protein will be longer than normal.
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Answer:
read the explanation.
Explanation:
Both are enzymes, both has active sites because they are enzymes. A difference is that serine proteases has serine aminoacids in it active site. The aspartic proteases has an activated water molecule bond to one or more aspartate aminoacid in its active site.
Serine proteases are two main kinds, chymotrypsin and subtilisin kind. Aspartic proteases are three main kinds, pepsin, cathepsin and renins.
Serine proteases are found either in eukaryotes and prokaryotes, meanwhile the aspartic proteases are found mainly in eukaryotes as molds and yeast but rarely in prokaryotes such as bacteria.
Hope this info is useful.
Answer:
The Desert.
Explanation:
since it is in the equator the earths tilt is more shown to the sun.
