Muscles produce and resist movement
Indicate whether the statement is true or false
TRUE
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The results obtained when the linker was cloned between -50 and -100 indicate that
A. this region is not critical for transcription but can enhance transcription B. the assay failed C. when cloned in this region the linkers had a transacting effect D. the results of the assay were variable and this is just due to random variation in the assay Bloom's Level:
Replication
What will be an ideal response?
Which of the following statements regarding the cell-mediated immune response is TRUE?
A) Cytotoxic T lymphocytes do not require antigen presentation to become activated. B) Cytotoxic T lymphocytes interact with antibodies that have bound antigen to identify their target. C) Helper T lymphocytes have no role in the activation of cytotoxic T lymphocytes. D) Cytotoxic T lymphocytes kill by producing hydrogen peroxide. E) A single cytotoxic T lymphocyte can kill many target cells.
For the Galapagos Islands finch species Geospiza fortis, drought conditions produced a change in the population in which the next generation had larger beaks than the previous one. What produced this change in the population?
A) Birds with smaller beaks had higher fitness, but they waited to reproduce until wet weather returned. B) Birds with smaller beaks had higher fitness, but they were outcompeted by birds with larger beaks. C) Birds with smaller beaks flew to nearby islands where food was more plentiful. D) Birds with larger beaks had higher fitness, so they could produce more offspring that inherited the same trait.