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Neurotransmitters are released by neurons in response to nerve impulses. How would you expect them to be secreted?

Myosin II is found in skeletal muscle and the contractile ring. It is a two-headed myosin with tails that can form thick filaments. Other myosins, such as myosin I or myosin V, do not form thick filaments and yet are still capable of producing movement along actin filaments. To what do the tail(s) of myosin I and myosin V bind?

Ran GAP association with cytoplasmic filaments of the nuclear pore results in the conversion of the nucleotide that is bound to nuclear Ran into?

You have overexpressed a dominant negative E-cadherin lacking an extracellular domain in epithelial cells. How will this mutant affect cell–cell adhesion?

How does release of Ca2+ from the sarcoplasmic reticulum affect skeletal muscle?

The unfolded protein response pathway includes?

Using fluorescence microscopy, you identify COPI-coated vesicles associated with Golgi cisternae. They are likely vesicles that?

An important step in the import of the transcription factor NF-kB into the nucleus is regulated by a?

What is the difference between paracrine and endocrine signaling?

What are the roles of caveolae?