In wild-type genes, RNA polymerase II terminates transcription at any one of multiple possible sites within about

2 kb of the polyadenylation signal. When the polyadenylation signal is mutated, RNA polymerase II does not terminate transcription, but continues transcription until the next poly(A) site.

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#Id: 4727

#Unit 13. Methods in Biology

Carotenoids gives absorbance between 400 – 500 nm of wavelength while porphyrin gives absorbance at 400 nm of wavelength known as Soret band.

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#Id: 3869

#Unit 5. Developmental Biology

Newly activated genes are:

Adenylate cyclase A (ACA)
PKA
cAMP receptors (cARs)
Extracellular cAMP phosphodiesterase PdsA
An intracellular cAMP phosphodiesterase RegA

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#Id: 3138

#Unit 7. System Physiology – Animal

There are four pulmonary lung volumes:

1. Tidal volume
2. Inspiratory reserve volume
3. Expiratory reserve volume
4. Residual volume

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#Unit 4. Cell Communication and Cell Signaling

Daudi tumor cells, which are unable to synthesize β 2-microglobulin. 

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#Id: 3505

#Unit 2. Cellular Organization

Parity rules by Erwin Chargaff

Rule of complementarity (First parity rule)

Rule of Equal amount applies more closely to introns than to exons (Second parity rule)

Cluster rule – Purines in nontemplate strand applies more closely to Exons (Third parity rule)

GC Rule- GC content tends to be greater in exons than in introns (Fourth parity rule