Both the nucleus and the mitochondrion are surrounded by a two layer membrane
Indicate whether the statement is true or false
TRUE
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Which of the following is/are found in all cells of excitable and nonexcitable tissues?
a. a threshold potential b. a resting membrane potential c. gated ion channels d. all of the above characteristics e. mechanically-gated channels
Approximately the last 15 cm of the digestive tract is the
A) anus. B) anal canal. C) rectum. D) sigmoid colon. E) rectal column.
Lactose intolerance
A. results from removal of the gallbladder. B. is an inability to digest milk sugar. C. is an inability to digest proteins. D. is most common in very young children. E. results from the inability to secrete insulin.
Systemic blood pressure must stay above 60 so that the proper amount of filtration occurs.
a. true b. false