Cytosine is deaminated to Uracil.

TLS Online TPP Program

#Id: 5801

#Unit 7. System Physiology – Animal

TRH receptors in the pituitary cell membrane activates the phospholipase second messenger system, leads to TSH release.

TLS Online TPP Program

#Id: 10302

#Unit 4. Cell Communication and Cell Signaling

Positive Costimulatory Receptors: ICOS

ICOS binds to another member of the growing B7 family, ICOS-ligand (ICOS-L), which is also expressed on a subset of activated APCs.

ICOS plays a key role in maintaining the activity of already differentiated effector and memory T cells.

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#Id: 3037

#Unit 3. Fundamental Processes

DnaB is responsible for forward movement at the replication fork.

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#Id: 3492

#Unit 12. Applied Biology

In somatic embryogenesis, a somatic embryo (SE) is derived from a somatic cell, other than zygote.

TLS Online TPP Program

#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