Working with intentionally mutated cells, you come across a cell that seems to be struggling with transcription of a gene with a distant enhancer. Further examination shows that the enhancer region for this gene is several thousand base pairs away but fully intact. However, for this enhancer to interact with the core promoter, it requires assistance. Given that this assistance has failed, which proteins are likely to be mutated?
a. distal control elements
b. RNA polymerase
c. DNA bending proteins
d. core promoter sequence
c. DNA bending proteins
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A highly branched secondary structure is formed during:
A. attachment of a 5' cap to mRNA. B. attachment of poly(A) tails to mRNA. C. splicing of all classes of introns. D. splicing of group I and II introns.
Match the following items with the correct phrases.
_______1. Several dozen people having nausea and diarrhea several hours after a church picnic. _______2. A disease that occurs only every once in a while in a particular geographic region. _______3. A disease that is always present in a particular geographical region. a. endemic disease b. epidemic disease c. pandemic disease d. sporadic disease
If you teach your dog to sit by giving him a treat for every correct response, this is an example of
A) operant conditioning. B) social learning. C) habituation. D) innate behavior. E) insight learning.
Which of the following viruses are oncogenic?
A. parvovirus B. human herpesvirus 4 C. papillomavirus D. both human herpesvirus 4 and papillomavirus E. both parvovirus and human herpesvirus 4