In Run-on transcription- the RNA polymerase that has already initiated transcription in vivo simply “runs on” or continues to elongate the same RNA chains. 

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#Id: 9876

#Unit 4. Cell Communication and Cell Signaling

These epithelial barriers include the skin and the tissue surfaces connected to the body’s openings.

Skin and other epithelia provide a kind of living “plastic wrap” that encases and protects the inner domains of the body from infection.

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#Id: 4746

#Unit 5. Developmental Biology

Sperm microtubules contacts the cortical cytoplasm and initiates cytoplasmic movements that push the male pronucleus to the nearest end of the oblong oocyte.

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#Id: 6480

#Unit 3. Fundamental Processes

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#Id: 817

#Unit 3. Fundamental Processes

Region 2.3, 2.4, and 4.2 contact bases in the -10 and -35 elements, respectively; 

sigma factor region 1.2 contacts the promoter region just downstream from the -10 element, and region 3.0 contacts the promoter region just upstream from the -10 element.

 

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#Id: 2875

#Unit 13. Methods in Biology

According to the Beer–Lambert law, absorbance is linearly proportional to the concentration of chromophores.