Structure of the inner ear responsible for hearing: the cochlea
Structure of the inner ear responsible for balance: semicircular canals and the vestibule
Answer:
A.Sound waves are unable to travel in outer space.
The repressor protein is coded by the i gene.
<h3>What is the function of the repressor protein in lac operon?</h3>
A protein known as a repressor prevents one or more genes from being expressed. The i gene codes for the repressor protein. The repressor protein inhibits messenger RNA synthesis by attaching to the promoter region of the gene(s). For the control of gene expression in cells, repressor proteins are crucial.
Repressors and activators of gene expression in bacteria are different from one another. However, depending on how a DNA binding protein interacts with other proteins in the cell or in other biological contexts, higher eukaryotic cells can use it as either an activator or a repressor of gene expression. As repressors, additional components like non-coding RNA may also be present.
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The rigth answer is C (B ==> A ==> C)
The 3 images represent the key stages of mitosis.
Image B represents the beginning of the anaphase, where the chromosomes are aligned in the equatorial plate.
The image A represents the anaphase where the chromosomes are separated on both sides of the cell.
The image C represents the telophase or one can observe in the middle the formation of the division furrow to allow the cell to cut itself in two.
Night beetles can live without food for years