The shape of the external ear is maintained by ________
A) hyaline cartilage
B) elastic cartilage
C) fibrocartilage
D) adipose tissue
B
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If multicellular organisms have distinct cell types, this means that
A) The different cell types express different genes. B) Each cell can be different. C) Some of the organism's cells will grow larger over time. D) Some cells will have cell walls and others won't.
An anatomical section that separates the body into right and left portions is a
__________ section. A) coronal B) sagittal C) frontal D) transverse
Sarah is a sprinter who specializes in quick and powerful bursts of speed followed by periods of rest. Priya is a marathon runner who specializes in long, steady runs. Compared to Priya, Sarah is likely to have
A. leg muscles with a larger diameter. B. leg muscles with a smaller diameter. C. lower concentrations of glycolytic enzymes in her leg muscles. D. hypertrophy of type I muscle fibers. E. a higher density of capillaries in her leg muscles.
Which layer of the epidermis is composed of a single row of cuboidal or columnar keratinocytes?
a) Stratum basale b) Stratum spinosum c) Stratum granulosum d) Stratum lucidum e) Stratum corneum