MHC class II molecules are found on
A. neutrophils, monocytes, and macrophages.
B. dendritic cells, B cells, and helper T cells.
C. monocytes, helper T cells, and neutrophils.
D. B cells, macrophages, and dendritic cells.
E. B cells, C cells and D cells.
D
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An individual who could trace a picture of a bicycle with his or her finger but could not recognize it as a bicycle is most likely to have sustained damage to the ________.
A) calcarine cortex B) primary visual area C) visual association area D) lateral geniculate body
Lymphatic nodules consist of:
A. central arteries and monocytes. B. lymphatic cells, extracellular matrix, and an incomplete connective tissue capsule. C. crypts, trabeculae, and Reed-Sternberg cells. D. afferent vessels, efferent vessels, a cortex, and medulla. E. a hilum that is located intermediate to two lobules.
Many hormones are synthesized as preprohormones. A mutation in a preprohormone-encoding gene that changed the amino acid sequence of the signal peptide could result in:
A. inability of the hormone to be secreted B. decreased circulating half-life of the hormone C. secretion of a smaller hormone D. inability of the hormone gene to be transcribed E. reduced affinity of the hormone for its receptor
Which of the following lists the number of each type of vertebrae correctly?
A. Seven cervical vertebrae, twelve thoracic vertebrae, five lumbar vertebrae, one sacrum, and one coccyx B. Twelve cervical vertebrae, five thoracic vertebrae, five lumbar vertebrae, one sacrum, and one coccyx C. Seven cervical vertebrae, five thoracic vertebrae, twelve lumbar vertebrae, one sacrum, and one coccyx D. Seven cervical vertebrae, twelve thoracic vertebrae, five lumbar vertebrae, two sacra, and one coccyx