Which of the following hormones is both synthesized and stored in the pituitary gland?

#Question id: 2323

#Unit 2. Cellular Organization

Prior to replication the DNA in the nucleus is in the form of a tangled mass called

#Question id: 567

#Unit 1. Molecules and their Interaction Relevant to Biology

Penicillin and related drugs inhibit the enzyme; this enzyme is produced by 

#Question id: 1203

#Unit 4. Cell Communication and Cell Signaling

People who suffer from thyroid adenomas have constitutively activated G proteins in some cells of the thyroid gland. Tumor cells not only secrete copious quantities of thyroid hormones but also divide and grow excessively. Based on these observations, in what kind(s) of signal transduction pathways do the mutant G proteins participate?

#Question id: 610

#Unit 1. Molecules and their Interaction Relevant to Biology

Protein A has four identical subunits, each of which binds one molecule of ligand Y. The binding of one molecule of Y to one of the subunits induces a conformational change in neighboring subunits that enhances the binding of additional units of Y. This is an example of________.

#Question id: 2513

#Unit 2. Cellular Organization

First you dissolve the membrane from an intact flagellum using the detergent Triton X-100. Next you soak the axoneme in a solution containing EDTA, which removes the Mg2+. What remains of the axoneme after these treatments?