Class A and B activities are required for the formation of petals.

TLS Online TPP Program

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#Unit 4. Cell Communication and Cell Signaling

GRB2 has- 

Phosphotyrosine-binding SH2 domain

Two SH3 domains, bind to Sos

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#Unit 5. Developmental Biology

IFN- ¥ has been shown to induce expression of the class II transcriptional activator (CIITA). 

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#Unit 2. Cellular Organization

TLS Online TPP Program

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#Unit 2. Cellular Organization

Four classes of ATP-powered pumps:

P-class pumps

V-class pumps

F-class pumps

ABC Superfamily

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#Unit 7. System Physiology – Animal

Type A intercalated cells  secrete hydrogen ions by a hydrogen-ATPase transporter and by a hydrogen-potassium-ATPase transporter are especially important in eliminating hydrogen ions while reabsorbing bicarbonate in acidosis