List the six major functions of proteins
What will be an ideal response?
Proteins have 1) structural, 2) regulatory, 3) contractile, 4) immunological, 5) transport, and 6) catalytic functions.
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An autorhythmic heart cell is one in which
A. action potentials fire spontaneoulsy. B. action potentials are stimulated by internal stores of acetylcholine. C. action potentials always occur at exactly the same frequency. D. all filaments contract and relax with a high degree of synchrony. E. action potentials are initiated by the autonomic nervous system.
Once fertilization has occurred, the activities of development begin. The first such activity is ________
A) the formation of organ systems B) cellular specialization C) an increase in cell number
The spinal cord begins at the ________.
A. cerebellum B. conus medullaris C. 1st cervical vertebrae D. medulla oblongata E. foramen magnum
What is "allosteric modulation"?
A. The fact that all binding sites on a protein must be occupied to have a biological effect B. The ability of a single ligand-binding site to bind to molecularly similar ligands C. Regulation of physiological functions by the sympathetic division of the autonomic nervous system D. The change in the shape and functional state of a protein that occurs when a ligand binds to a regulatory site E. Modification of the functional state of a protein by temperature or pH