An explanation for the evolution of insect wings suggests that wings began as lateral extensions of the body that were used as heat dissipaters for thermoregulation. When they had become sufficiently large, these extensions became useful for gliding through the air, and selection later refined them as flight-producing wings. If this hypothesis is correct, insect wings could best be described as

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#Question id: 11741

#Unit 6. System Physiology – Plant

phloem transport indicating the importance of long distance transport in plants, the experiments demonstrated that removal of a ring of bark around the trunk of a tree, which removes the phloem. What will be its effect?

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#Question id: 15480

#Unit 12. Applied Biology

Feedback repression involves the turning “off” of enzyme synthesis when the amount of the product has been made in sufficient quantities. The end product of the pathway acts as

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#Question id: 23785

#Unit 7. System Physiology – Animal

What happens when rod cells hyperpolarize? 

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#Question id: 3012

#Unit 2. Cellular Organization

Agar is a sulfated polymer

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#Question id: 3881

#Unit 3. Fundamental Processes

Which one of the following statements about mRNA stability is true?