Which of the following proteins function as localization of nanos mRNA?

a) Vasa

b) tudor & oskar 

c) Acron & telson 

d) exuperantia & swallow

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#Question id: 5677

#Unit 5. Developmental Biology

During acrosome reaction, after binding with the egg many sperm membrane proteins are activated. Which of the following membrane protein is not activated?

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#Question id: 24270

#Unit 4. Cell Communication and Cell Signaling

Integrins typically exhibit low affinities for their ligands, with

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#Question id: 13553

#Unit 6. System Physiology – Plant

According this graph which statements is most appropriate ;

a) The air surrounding the leaf is very still, the layer of unstirred air on the surface of the leaf may be so thick that it is the primary deterrent to water vapor loss from the leaf   

b) The air surrounding the leaf is very still, reduces the thickness of the boundary layer at the leaf surface, reducing the resistance of this layer

c) The moving air reduces the thickness of the boundary layer at the leaf surface, reducing the resistance of this layer    

d) The moving air, the layer of unstirred air on the surface of the leaf may be so thick that it is the primary deterrent to water vapor loss from the leaf

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#Question id: 5006

#Unit 11. Evolution and Behavior

The oxygen revolution changed Earthʹs environment dramatically. Which of the following adaptations took advantage of the presence of free oxygen in the oceans and atmosphere?

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#Question id: 5529

#Unit 5. Developmental Biology

In humans, organogenesis in the embryo is basically accomplished by the end of which period of the pregnancy?