The correct matches are as follows:
<span>1.synthesis of repeating molecules
</span>polymerization - It is a reaction that involves monomer molecules bonded to each other.
<span>
2.decomposition using water
hydrolysis - it is a reaction involving water
3.two or more simpler molecules strung together
</span>polymer - it is the result of a polymerization reaction
<span>
4.a group of organic compounds including fats and steroids
nucleic acid - examples are DNA and RNA
5.a sugar or polymer of sugar
carbohydrate
6.a sequence of sugars, phosphates, and nitrogenous organic bases
protein
7.large number of amino acids linked together by peptide bonds
lipid - it is used interchangeably with fat</span>
Answer:
Please find the detailed explanation of this statement below
Explanation:
Firstly, a repressed gene is a gene whose expression has been inhibited or repressed. The lac operon in E.coli bacteria is a regulatory unit containing structural genes, a single promoter and operator regions. The promoter is the region where the transcription enzyme (RNA polymerase) binds to in order to transcribe the genes in the lac operon. The structural genes in the lac operon can only be expressed in the presence of lactose sugar.
However, in the absence of lactose, LAC REPRESSOR, which is a transcription factor (protein), prevents the binding of RNA polymerase to the PROMOTER region by binding to the OPERATOR region of the lac operon. This inhibits the expression of the lactose genes in the operon.
Note that, the structural genes in the lac operon (lacZ, lacY, lacA) code for proteins that help break down lactose sugar for energy in the E.coli bacteria. Therefore, a bacteria cell with a repressed lac operon will be unable to degrade lactose sugar.
Answer:
The larva stage of skilworm is a worm-like creature that emerges from the egg, the first life stage. And the pupa stage of silkworm is the sedentary, transformative form following the larval stage
<span>Too little is known about pre-Archean time, from the origin of Earth to 3.8 billion years ago, to divide that period into units.</span>
