The AP-1 transcription factor is a heterodimer of the Fos and Jun proteins. What is the protein-dimerization motif present in these two proteins?
A. basic leucine zipper
B. helix-turn-helix
C. zinc finger
D. homeodomain
A
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Source habitats are areas where reproductive success is less than local mortality
____________________ Indicate whether the statement is true or false.
How many net ATP are made in glycolysis?
A. 1 B. 2 C. 6 D. 34 E. 38
Hydrophobic residues are seen on the 'outside' surface of transmembrane proteins (i.e. orientated towards the lipid bilayer of the membrane). Consequently, it was suggested that the transmembrane proteins have an 'inside-out' structure compared with a globular protein. Why was this suggestion proposed?
A. Globular proteins are seen to have a hydrophilic core B. Transmembrane proteins are seen to have a hydrophilic core C. Globular proteins are seen to have hydrophobic residues inside the core of the protein D. Transmembrane proteins are very much more difficult to purify than globular proteins
The pigment most involved with photoperiodism is ____.
A. chlorophyll B. xanthophyll C. anthocyanin D. phytochrome E. phycoerythrin