In the dark, PEPCase returns to the inactive form because PEPCase‐kinase is inactivated and a phosphatase releases the phosphoryl group from PEPCase.

TLS Online TPP Program

#Id: 10344

#Unit 4. Cell Communication and Cell Signaling

B- cell maturation

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#Id: 5437

#Unit 7. System Physiology – Animal

The Na+ channels rapidly enter a closed state called inactivated state and remain in this state for a few milliseconds

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#Id: 1325

#Unit 4. Cell Communication and Cell Signaling

Activated PKA enhances the conversion of glycogen to glucose-1-phosphate.

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#Id: 9197

#Unit 11. Evolution and Behavior

Stabilized natural selection

Favor intermediate phenotype but eliminate lower and higher-grade phenotype

It introduced homogeneity in the population

Exp - clutch size of birds that lay too many or too few eggs per nest have lower fitness values than do those that lay an intermediate number of eggs

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#Id: 6422

#Unit 8. Inheritance Biology

Autosomal Recessive Traits

Autosomal recessive traits normally appear with equal frequency in both sexes.

The trait seems to skip generations.

When both parents are heterozygous, approximately one-fourth of the offspring are expected to express the trait.

Recessive traits appear more frequently among the offspring of consanguineous matings.

Example - Tay–Sachs disease, sickle cell anemia, cystic fibrosis, PKU