Lyme disease is caused by a bacterium found in the bloodstream of small woodland rodents such as mice or chipmunks and also found occasionally in deer. Yet humans get this disease without coming into direct contact with either rodents or deer
Explain the concept of a biological vector, and discuss how humans contract Lyme disease.
Although the bacterium that causes Lyme disease is found in animals, it can be transmitted to humans even if the animal is not present. Small external parasites called ticks bite the animal host and pick up the microbes from the bloodstream. Then they may jump on a human who is passing by and bite the person. This bite transmits the bacterium from the tick to the human.
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Which is an example of a germline gene therapy?
A) A transgenic plant or animal B) A bone marrow transplant C) A disabled cold virus that delivers genes to airway epithelium to treat cystic fibrosis D) Removing skin cells, genetically altering them, and replacing them
The pigments responsible for the color of red algae are the prodigiosins
Indicate whether the statement is true or false.
Members of the lineage ____ include octopuses, squids, and nautiluses. Their fused head-foot body
has the "foot" modified into a set of arms and tentacles.
a. Cephalopoda b. Polyplacophora c. Bivalvia d. Gastropoda e. Scaphopoda
Who was first scientist to identify and characterize DNA?
a. Rosalind Franklin b. Linus Pauling c. Francis Crick d. Friedrich Miescher