Compare and contrast the structure and function of ion channel-linked receptors, G protein-linked

receptors, and enzyme-linked receptors. In general, how do they differ from intracellular receptors? What will be an ideal response?


Concepts to Consider: Ligand-gated channels; alpha helices in G proteins and GDP/GTP
replacement; domains of enzyme-linked receptors; transcription factors

Biology & Microbiology

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The transcribed, but not translated, sequence that is immediately upstream of the region that encodes the functional product is called the ________ region.

A. trailer B. coding C. leader D. promoter

Biology & Microbiology

Like prokaryotic cells, most eukaryotic cells have an external cell wall.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Identification of the causative microbe for a diarrheal infection often requires a stool culture.  The best medium for this purpose is

A. a medium containing mammalian blood to provide extra growth factors. B. a liquid medium, as the diarrhea conditions are more liquid than solid. C. a medium containing bile as a selective agent. D. a medium containing a broad-spectrum antibiotic as a selective agent. E. a general purpose medium that supports the growth of the diverse gut microbiota.

Biology & Microbiology

Excess tissue fluid becomes lymphatic fluid that eventually enters the blood stream.

Answer the following statement true (T) or false (F)

Biology & Microbiology