Which of the following molecules is the most likely to diffuse across a biological membrane?

Coat proteins mediate vesicular transport within eukaryotic cells. For each transport step indicated in the diagram below, name the coat protein or complex that mediates the indicated step.

When visualized using the electron microscope, the appearance of rough endoplasmic reticulum results from the presence of which protein complexes

What post-translational modification can mark cytosolic proteins for degradation by the proteosome?

Unlike soluble, cytosolic proteins, membrane proteins are more difficult to purify. Which of the following substances is most commonly used to help purify a membrane protein?

Climactic fruits employ which of the following to facilitate ripening?

Write the highest and lowest isobars found on the map above, separate numbers with a comma (,). 

Levels of Cdk activity change during the cell cycle, in part because _______.

For both actin and microtubule polymerization, nucleotide hydrolysis is important for _______.

Apoptosis differs from necrosis in that necrosis _______.