Lederberg and Tatum’s experiment demonstrated that bacteria undergo genetic exchange.

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#Id: 7904

#Unit 2. Cellular Organization

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#Id: 9539

#Unit 11. Evolution and Behavior

Before Darwin - Christians interpreted “special creation”

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#Id: 9233

#Unit 6. System Physiology – Plant

Photorespiration stimulates nitrate assimilation in C3 plant roots, probably by increasing NADH availability in the cytosol.

Photorespiration is positively correlated with growth under nitrogen limitation

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#Id: 4965

#Unit 6. System Physiology – Plant

Reversal of etiolation

Etiolated plants are those that have been grown in the dark, light stimulates increased [cytokinin] which stimulates cell division and greening.

increases [GA] which presumably stimulates IAA oxidase production to get rid of excess IAA that causes the long spindly growth.

IAA stimulates ethylene synthesis which maintains the apical hook, treating the apical hook with red light + ethylene maintains the hook.

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#Id: 450

#Unit 2. Cellular Organization

All four core histones show a similar type of structure in which three a-helices are connected by two loops. This highly conserved structure is called the histone fold.