An amino acid may act as a proton acceptor or donor. Explain
What will be an ideal response
Amino acids have two components?a base group (proton acceptor) and an organic acid part (a proton donor). Some have additional base or acid groups on the ends of their R groups as well.
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Graded potentials may
A) depolarize the membrane to the threshold voltage. B) initiate an action potential. C) hyperpolarize the membrane. D) be called EPSPs or IPSPs. E) All of the statements are true.
What types of phagocytic cells are present in connective tissue proper?
A) neuroglial cells B) fixed and free macrophages C) fixed and free macrophages, neutrophils, and eosinophils D) neutrophils and monocytes E) Sertoli cells and Schwann cells
The expanded distal end of the fibula is called the
A. shaft. B. neck. C. head. D. medial malleolus. E. lateral malleolus.
Lymphocytes secrete antibodies, coordinate action of other immune cells, and serve in immune memory.
Answer the following statement true (T) or false (F)