Which of the following organisms is likely to be transmitted via contaminated shrimp?
A) Trichinella spiralis
B) Vibrio parahaemolyticus
C) Giardia lamblia
D) Clostridium perfringens
E) Staphylococcus aureus
B
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Which of the following is not true of the site-specific recombination reaction catalyzed by tyrosine-class recombinases?
A. One recombinase subunit becomes covalently linked to the DNA through a phosphotyrosine bond. B. The overall reaction proceeds with a minimal free-energy change. C. The overall reaction requires four unique cleavage events. D. Isomerization of the Holliday intermediates includes branch migration through the core sequence. E. All of the choices given are true.
In the future, it may be possible to screen for a number of different types of cancer by a simple blood test. If a blood test indicates a very early stage of lung cancer, where is the most likely place that the tumor will be growing?
A. in the parietal pleural membrane B. in the wall of a large bronchus C. in the visceral pleural membrane D. in the wall of an alveolus E. in the wall of a pulmonary vein
Antagonistic pairs are what?
What will be an ideal response?
Genes located near one another on the same chromosome are often inherited together. These are called ________
A) nonsegregated genes B) joined genes C) fused genes D) linked genes