Treadmilling

Because the critical concentrations for the two ends are different, at steady state the free ATP–G-actin will be intermediate between Cc+ and Cc - , so the (+)end will grow and the (-)end will lose subunits.

TLS Online TPP Program

#Id: 9921

#XL - T Zoology

Cell-Mediated Immunity against Virus

Both CD8+ TC cells and CD4+ TH1 cells are required components of the cell-mediated antiviral defense.

Activated TH1 cells produce IL-2, IFN-ϒ, and tumor necrosis factor-α.

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#Id: 9296

#XL - R Botany

TLS Online TPP Program

#Id: 4704

#XL - T Zoology

In haplodiploid organisms, males are haploid, and females are diploid. Consider the relatedness diagram shown below. Female A has a full-sister, Y, who has a daughter, B. The relatedness between A and B is ___________. 

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#Id: 8603

#XL - R Botany

G1 Cyclin–CDKs

In human - cyclin D-CDK 4 

cyclin D-CDK 6

In budding yeast - CIn 3-Cdc 28 

TLS Online TPP Program

#Id: 9567

#XL - T Zoology

Cope’s rule:  A proposed generalization that individual body size in animals tends to increase during evolution.