Breaking a bond always require energy to be added to the molecule. Correspondingly, making a bond always releases energy.

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#Id: 1180

#Unit 7. System Physiology – Animal

The photosensitive pigment in the rods is called rhodopsin (visual purple).

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#Id: 10527

#Unit 4. Cell Communication and Cell Signaling

By scramblase, appearance of phosphatidylserine on the outer surface, act as “eat me” signal

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#Id: 5961

#Unit 10. Ecological Principles

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#Id: 702

#Unit 3. Fundamental Processes

The replicase activity of DNA polymerase III was originally discovered by a conditional lethal mutation in the dnaE locus, which codes for the 130 kD, a subunit that possesses the DNA synthetic activity.

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#Id: 6335

#Unit 8. Inheritance Biology

Many turtles, crocodiles, alligators, and a few birds is affected by temperature during embryonic development.  In turtles, for example, warm incubation temperatures produce more females, whereas cool temperatures produce males.

In alligators, the reverse is true.