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
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How does sickle cell disease cause death?
a. The malformed red blood cells cannot transport oxygen. b. The malformed red blood cells can block capillaries. c. The malformed blood cells have a higher affinity for CO2 than for oxygen. d. The mutant hemoglobin polypeptide cannot bind O2 due to a change in three amino acids. e. More cells assume the sickle shape as oxygen concentration in the tissues increases.
Both pocket mice and peppered moths are exposed to selection pressure caused by ________
a. industrial pollution b. predators c. temperature changes in their habitats d. vegetative disruptions caused by introduced plant species
Which of the following materials has the highest recovery rate in recycling?
A. plastics B. paper C. batteries D. yard trimmings E. glass
Lysozyme and the antibiotic penicillin have similar mechanisms of action in that they both cause damage to the bacterial
A) cell membrane. B) capsule. C) cell wall. D) DNA. E) ribosomes.