Charles Lile argued that human populations grow faster than the resources they demand
a. true
b. false
Ans: b. false
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A child is stung by a bee at the beginning of the summer and has mild swelling and itching at the site of the sting
In late summer, the child is stung again, but this time rapidly develops anaphylaxis and is diagnosed with type I hypersensitivity to bee venom. If the child is allergic to bee venom, why was there no reaction after the first bee sting? What specifically happened after the first sting that led to the allergic reaction? What will be an ideal response?
The limpet-like Neopilina was thought to be extinct for over
a. 100 million years. b. 175 million years. c. 250 million years. d. 350 million years. e. 1 billion years.
When using vectors to produce proteins for gene therapy, what are some of the problems that may occur and how has medical science overcome these problems?
A. cDNA produced by vectors active an immune response, tags are therefore added to help the body identify them as self. B. Proteins injected using vectors get degraded too quickly and therefore protective segments have been added to the proteins. C. Virus vectors used may actually cause disease and therefore medical technicians have removed those segments. D. RNA added via vectors to a human may cause a toxic response and so a buffer is added to the vector.
A man comes to his physician complaining of drowsiness and a desire to sleep. He is suffering from tremors. He has just returned from central Africa. His physician believes that he may be suffering from a disease caused by Trypanosoma brucei, variety gambiense. If so, he has been bitten by a:
a. tsetse fly b. "kissing bug" c. mosquito d. tick