Conventional wisdom holds that oxpeckers remove ticks from the backs of cattle on which they feed in a mutualistic relationship, and the cattle tolerate the oxpecker's presence because the birds help remove parasites
Weeks (2000 ) performed observational experiments in Zimbabwe and demonstrated that the relationship between oxpeckers and cattle was not the removal of parasites but that the oxpeckers are ________. A) mutualistic, but serve only to remove earwax from the cattle on which they feed
B) in fact parasitic, and create and feed on wounds they make, and also feed on earwax in the cattle
C) mutualistic and only feed on open wounds that have already been created by feeding ticks
D) parasitic and feed on earwax and the open wounds they create during the removal of the earwax
E) mutualistic and feed on open wounds that have already been created by ticks, and additionally feed on earwax
B
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One goal of regenerative medicine is to (Select all correct choices):
A. create stem cells for patients using their own adult cells. B. develop cells, tissues, and organs that can replace damaged ones with minimal or no danger of tissue rejection. C. create a bank of totipotent stem cells from which new tissues and organs can be generated.
Humans belong to which of the following domains?
A) Bacteria B) vertebrates C) Eukarya D) Archaea
During this process, a ribosome assembles a polypeptide whose amino acid sequence is specified by the nucleotide sequence in a molecule of mRNA.
A. transcription B. replication C. posttranscriptional modification D. translation
Contact dermatitis is a type (I/II/III/IV) hypersensitivity disorder.
Fill in the blank(s) with the appropriate word(s).