The preferred habitat of S. aureus is the
A. throat.
B. urethra.
C. bladder.
D. nasal chamber.
D.
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Discuss how only one blocked metabolic pathway, such as the one leading from phenylalanine, has the potential to cause many different disorders
What will be an ideal response?
In a long term study by the evolutionary biologists Endler and Reznick, they illustrated the effect of predation on life history traits by studying guppies with different predators: cichlids and killifish. The killifish preys mostly on immature, smaller guppies and cichlids pursue mature, larger guppies. They noticed that in river portions with only killifish, the guppies were larger than in
river portions with only cichlids. How did Endler and Reznick test whether these differences in life history traits were genetic? What will be an ideal response?
The hormone whose levels remain high when the body is suffering from inflammation and stress is _____
a. cortisol b. luteinizing hormone c. thymosin d. prolactin e. parathyroid hormone
Methylation and RNA interference are both involved in regulating mobile genetic elements. Which of the following statements is TRUE?
A) Methylation is a form of post-transcriptional silencing, whereas RNA interference is a form of pre-transcriptional silencing. B) Both are examples of post-transcriptional silencing. C) Both are examples of pre-transcriptional silencing. D) RNA interference is a form of post-transcriptional silencing, whereas methylation is a form of pre-transcriptional silencing.