Which of the following is an appendage of a neuron that sends electrical signals away from the neuron cell?
A) axon
B) dendrite
C) neurite
D) neuroglia
Answer: A) axon
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Which of the following statements is FALSE?
A) Excess carbohydrate and fat can be stored as such, whereas excess amino acids are oxidized for energy or converted to fat or glycogen for storage. B) Fats and carbohydrates are oxidized directly to produce cellular energy. C) The amino acid pool is the body's total supply of amino acids in the body's proteins. D) Amino acids can be used to supply energy only after being converted to a citric acid cycle intermediate.
The walls of the ________ separate the two extracellular fluid compartments.
Fill in the blank(s) with the appropriate word(s).
The following molecules freely pass through a cell membrane except which one?
A) oxygen B) carbon dioxide C) amino acids D) certain lipids
A patient experiencing pain, nausea, and lack of urination goes to the hospital and is given a blood test. The test reveals high amounts of nonprotein nitrogenous substances in the blood plasma, particularly urea. Which of the following organs is most likely malfunctioning?
A. Small intestine B. Kidneys C. Heart D. Liver