Helicobacter pylori can grow in the stomach because it
A) hides in macrophages.
B) makes a capsule.
C) possesses an enzyme that neutralizes HCl.
D) makes HCl.
E) invades epithelial cells.
C
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Brown fat is a specialized tissue found in infants and hibernating mammals. Brown fat mitochondria have proton channels located in their inner membranes. What does this mean for the organism?
A. ATP production would be reduced because these organisms do not need as much energy. B. Channels would contribute to the formation of the proton electrochemical gradient. C. The potential energy of the proton electrochemical gradient would be released as heat. D. There would be no effect.
A bloodstream infection with ____________________ could result in the release of endotoxin into the bloodstream.
A) Clostridium difficile or Clostridium perfringens B) Neisseria gonorrhoeae or Escherichia coli C) Staphylococcus aureus or Mycobacterium tuberculosis D) Staphylococcus aureus or Streptococcus pyogenes
Control systems in the cell can induce cell suicide, or apoptosis, in cells with excessive DNA damage
a. True b. False Indicate whether the statement is true or false
Which of the following is NOT found in bile?
a. salts b. cholesterol c. pigments d. digestive enzymes e. lipids