Multiple translocator complexes move different proteins from the ER membrane or lumen into the cytosol. Translocator complexes always contain an enzyme marking them for destruction, called:

#Question id: 1006

#Unit 1. Molecules and their Interaction Relevant to Biology

Four of the ten enzymes required for the biosynthesis of IMP are listed below. In which order do the reactions these enzymes catalyze occur during the synthesis of IMP?

1. IMP cyclohydrolase

2. GAR synthase

3. glutamine-PRPP amidotransferase

4. AIR carboxylase

#Question id: 4941

#Unit 11. Evolution and Behavior

Which of the factors below weaken the hypothesis of abiotic synthesis of organic monomers in early Earthʹs atmosphere?

1.  the relatively short time between intense meteor bombardment and appearance of the first life forms

2.  the lack of experimental evidence that organic monomers can form by abiotic synthesis

3.  Uncertainty about which gases comprised early Earthʹs atmosphere

#Question id: 28157

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is the cofactor for glutathione peroxidase 

#Question id: 1091

#Unit 4. Cell Communication and Cell Signaling

Why does testosterone, a lipid-soluble signaling molecule that crosses the membranes of all cells, affect only target cells?

#Question id: 4339

#Unit 3. Fundamental Processes

In positive control of several sugar metabolism-related operons, the cAMP receptor protein (CRP) binds to DNA to stimulate transcription. Which of the following environmental conditions causes an increase in CRP activity in stimulating transcription?