Of the following bony/cartilaginous structures, which arises from neural crest cells?
A. Laryngeal Cartilage
B. Occipital Bone
C. Parietal Bone
D. Petrous Part of Temporal Bone
E. Sphenoid Bone
Ans: E. Sphenoid Bone
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Choose the true statements about the evolution of eyes in mice and fruit flies.
_____ The gene Pax6 codes for a transcription factor involved in lens formation in the mouse. _____ In the fruit fly, the gene eyeless codes for a transcription factor involved in lens formation. _____ When the mouse gene Pax6 is inserted into a fruit fly, it causes a vertebrate-type lens to form on the fly's leg. _____ The sequences of the genes eyeless and Pax6 are very different.
The potential energy that an inactive neuron maintains as a result of its polarized membrane is called the _________ potential.
Fill in the blank(s) with the appropriate word(s)
Select the best response to the question. ?You are preparing a hospitalized patient for discharge home. What are the important instructions to include in your discharge medication teaching?
A) To take the prescribed antibiotic only as long as symptoms are present to decrease the risk of antibiotic resistance. B) To vary the administration times of the antibiotic according to the severity of symptoms. C) To continue the antibiotic only if the patient's fever returns. D) To take all of the prescribed antibiotics to decrease the risk of antibiotic resistance and disease recurrence.
How do some inhibitors slow down metabolic pathways when the products of the pathways are not needed but still allow a pathway to proceed when the products are needed?
A. Inhibitors promote an induced fit between a substrate and an enzyme's active site. B. feedback regulation C. enzyme activation D. Inhibitors usually degrade enzyme molecules.