Which of the following statements about fats is INCORRECT?
A. Fats are a good source of energy.
B. Fats contain approximately 2 hydrogens per carbon in the molecule.
C. Most fats do not dissolve in water.
D. Fats contain nitrogen, carbon, hydrogen, and oxygen atoms.
D. Fats contain nitrogen, carbon, hydrogen, and oxygen atoms.
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Sheep blood agar serves which purpose when used in the bacterial fecal culture?
a. Evaluation of general flora and predomi-nant species b. Selection of enteric pathogens such as Salmonella, Aeromonas, and others c. Inhibition of normal flora and selection of enteric pathogens d. Enrichment for enteric pathogens such as Salmonella and others
Symptoms of menopause
a. include hot flashes at night. b. can be controlled by hormone replacement therapy. c. treatment can result in increased incidence of breast cancer. d. can be aggravated by alcohol. e. include all of these.
Unequal crossing over often results in the formation of duplicate copies of existing genes. At what phase of meiosis can unequal crossing over occur, and why does this happen?
What will be an ideal response?
In gram-negative bacteria, which secretion systems depend on Sec or Tat to first move proteins across the inner membrane?
a. types II and V b. types I and II c. types II and IV d. types V and VI