What is the target of anthrax protective antigen (PA), edema factor, and lethal factor?
A. Endothelial cells lining the capillaries
B. Cells lining the alveoli in the lungs
C. Macrophages
D. Neurons
Answer: C
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How do we describe transformation in bacteria?
A) the creation of a strand of DNA from an RNA molecule B) the creation of a strand of RNA from a DNA molecule C) the infection of cells by a phage DNA molecule D) semiconservative replication of DNA E) assimilation of external DNA into a cell
If blood sugar levels drop below normal, the digestive system is primarily responsible for returning levels to normal. This is an example of
A. angiogenesis. B. metastasis. C. carcinogenesis. D. homeostasis. E. digestion.
What is the process through which many animals develop irreversible species-specific behavior patterns?
A. cognitive learning B. operant conditioning C. altruism D. imprinting E. taxis
Within prokaryotic cells, the ______ is the region where DNA is found.
a) rough endoplasmic reticulum b) flagellum c) smooth endoplasmic reticulum d) nucleoid