Which of the following statements regarding shiga toxin-producing E. coli is correct?
A. It synthesizes shiga endotoxin from the E. coli chromosome.
B. It synthesizes shiga exotoxin from a bacteriophage.
C. It synthesizes shiga exotoxin from the E. coli chromosome.
D. It synthesizes shiga endotoxin from a bacteriophage.
Answer: B
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Answer questions 58–61 by using the five numbers below
a. 10 b. 20 c. 40 d. 60 e. 80 M 58. How many sperm would eventually be produced from 20 spermatids? M 59. How many sperm would eventually be produced from 20 primary spermatocytes? M 60. How many ova (eggs) would eventually result from 20 secondary oocytes? M 61. How many ova (eggs) would eventually result from 20 primary oocytes?
Rick had a high incidence of cancer in his family. Four of the following five statements are preventative measures to avoid cancer. Which of the following is not correct?
a. Increase consumption of foods rich in vitamin A and C. b. Avoid salt-cured, pickled, or smoked foods c. Increase consumption of vegetables from the cabbage family. d. Avoid a high fiber, low sodium diet.
Abnormal epigenetic patterns of DNA ____________________ are associated with many types of cancer, and the
removal of ____________________ groups can activate genes involved with cell growth and can increase genomic instability. Fill in the blank(s) with the appropriate word(s).
The type of epithelial tissue you would expect to find lining the upper respiratory tract is:
a. pseudostratified columnar epithelium. b. simple squamous epithelium. c. ciliated columnar epithelium. d. stratified squamous epithelium. e. ciliated squamous epithelium.