Which support structure uniquely originates from Pharyngeal Arch IV?
A. Hyoid Bone
B. Laryngeal Cartilage
C. Mandible
D. Meckel's Cartilage
E. Temporal Part of Zygomatic Bone
Answer: B. Laryngeal Cartilage
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Which of the following statements is true concerning dark-field microscopy?
a. This type of microscopy uses specific stains to enhance the contrast of certain bacteria. b. The condenser does not allow light to pass directly through the specimen but directs the light to hit the specimen at an oblique angle. c. Dark-field microscopy allows the visuali-zation of larger viruses. d. Dark-field microscopy can differentiate various difficult-to-grow organisms by using immunofluorescence.
Given that humans shifted from hunter-gathers to an agriculturally based society within the last 10,000 years does NOT mean that ________
A) we cannot expect evolution by natural selection in human populations to have kept pace with our changing way of life B) humans still retain many, if not most, of the features that made us well adapted to living in the hunter-gatherer societies of the stone age C) we can use knowledge of the differences between our current lifestyle and the lifestyle of our pre-agricultural lifestyle to better understand both the peculiarities of humans and risks associated with our modern lifestyle D) humans are unique in that we have the capacity evolve by natural selection much more rapidly in response to changes in our environment than other organisms do
Which type of plant hormone generally acts as a growth inhibitor?
A) auxins B) gibberellins C) cytokinins D) abscisic acid (ABA)
Alteration of the ________ structure of a protein can transform the protein into an infectious agent known as a prion
A) secondary B) primary C) quaternary D) tertiary