From which of the following body sites would you expect to isolate Staphylococcus, Propionibacterium, Streptococcus and Corynebacterium as the primary colonizing microbiota?
A. Stomach
B. Deep gum regions
C. Small intestine
D. Skin
Answer: D
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A researcher is working to generate a new cancer drug. Thus far, he has identified a compound that can reduce the size of tumors in the lung. However, in order for the drug to work, the lung tumor has to be small. In addition, the tumor cannot have metastasized (spread to other areas of the body). Furthermore, he knows that the drug acts to prohibit the signaling from one tumor cell to another
tumor cell. Given the above information, this new drug prohibits: A. synaptic signaling between tumor cells. B. autocrine signaling between tumor cells. C. paracrine signaling between tumor cells. D. endocrine signaling between tumor cells.
Which of the following factors are considered during the risk assessment process for creating a safe microbiology laboratory?
A. Types of procedures to be performed with the infectious agents B. Cost of personal protective equipment C. Infectious agent risk groups D. Experience of the individuals working in the lab
Which system involves plasma proteins activated
when an organism’s pattern receptors become bound to anything? a. cytokine b. complement c. suppressor d. enhancer e. coagulation
What occurs after a pollen tube penetrates an ovule?
a. Other pollen tubes are attracted to that ovule. b. That pollen tube continues on to another ovule. c. Other pollen tubes are prevented from gaining access to that ovule. d. Other pollen tubes can penetrate that ovule more easily.