Which of the following is NOT a form of RNA used in protein synthesis?
A. Ribosomal RNA
B. Messenger RNA
C. Transfer RNA
D. Negative RNA
Answer: D
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The final common pathway relates to the ability of the nervous system to affect skeletal muscles via motor neurons
Indicate whether the statement is true or false
What physiological process occurs in the structure labeled "7"?
A) release of neurotransmitter
B) conduction of the action potential into the cell interior
C) activity of acetylcholinesterase
D) release of protein and calcium ions into the muscle fiber
E) opening of sodium channels and subsequent influx of sodium
Which of the following statements is FALSE?
A) The shape and number of layers of epithelial cells can change if they are subjected to long term irritation or abnormal conditions. B) The function of psuedostratified columnar epithelial tissue in the respiratory passages is to move mucus and debris from the passageways. C) The cells of simple squamous epithelial tissue contain many secretory vesicles filled with mucous and are therefore the most highly resistant to irritations. D) Cells that are responsible for secretion or absorption are larger because they contain more organelles to support their function. E) Cells with the major function of secretion or absorption are usually cuboidal and columnar in shape.
Which statement is NOT true regarding kidney function?
a. The renal tubule can modify tubular filtrate by reabsorption and secretion b. The kidneys filter about 180 liters plasma/day c. Each minute, about 120 ml filtrate enters the glomerular capsule d. Composition of the filtrate cannot be modified as it passes through the collecting tubules