L-Cysteine has traditionally been obtained by extracting it from acid hydrolysates of human hair and animal feathers. High levels cannot be synthesized from glucose because l-cysteine feedback inhibits the enzyme, which catalyzes one of the steps in the biosynthesis of l-cysteine. These enzyme are,

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#Question id: 31124

#Unit 2. Cellular Organization

Energy-dependent lipid flippase activity is essential for:  

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#Question id: 2993

#Unit 2. Cellular Organization

During meiosis, a defect occurs in a cell that results in the failure of spindle microtubules binding at the kinetochores. Which of the following statements describes the most likely result of such a defect?

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#Question id: 5585

#Unit 5. Developmental Biology

Hermaphrodite is the sexual phenotype of a gain-of-function transformer-1 in both X and XX of C. elegans. Which of the following loss-of-function will also result in hermaphrodite regardless of copy number of X?

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#Question id: 5020

#Unit 11. Evolution and Behavior

Dicynodonts survived the Permian extinction and, therefore, existed during both the

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#Question id: 28974

#Unit 7. System Physiology – Animal

Zona glomerulosa is controlled via__