The breakdown of fatty acids takes place via a process called:
A. glycolysis.
B. beta-oxidation.
C. oxidative phosphorylation.
D. fatty acid phosphorylation.
E. beta-carboxylation.
B
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A patient suspected of having tuberculosis has been admitted to the hospital. Which one of the following is not appropriate?
A) droplet precautions B) source isolation C) standard precautions D) use of a type N95 respirator by healthcare professional who are caring for the patient
What action by epinephrine and norepinephrine results in halting function of the kidneys during times of extreme stress?
a. They stabilize blood pressure and volume. b. They stimulate the renal tubules to reabsorb more sodium. c. They stop the flow of blood to the nephron. d. They insert aquaporins into collecting ducts and this promotes reabsorption of water.
Researchers applied radioactive phosphorus and radioactive calcium to a freshly cut tree stump. Eight days later, they came back to measure the distribution of the radioisotopes. They found that nineteen different species of shrubs and trees within a seven-meter radius had taken up the radioactive elements. No radioactivity was detected in the air. Radioactively labeled starch was later added to the stump; in subsequent observations, no labeled starch molecules were ever detected in neighboring plants. Which of the following is the most logical explanation for the observation?
a. During transport, the radioactive atoms are removed from the starch molecules. b. Starch molecules are too large to cross cell membranes. c. The radioactivity caused the starch molecules to break down. d. Water in the soil dissolved the starch molecules. e. The radioactive carbon atoms decayed into other atoms that are undetectable.
Identify and briefly describe the labeled structures of the long bone in this picture. 
A: ________B: ________C: ________D: ________E: ________F: ________G: ________
What will be an ideal response?