What is the function of the sliding clamp in DNA replication?
a. unwind DNA ahead of the replication fork
b. anchor DNA polymerase to the template strand
c. remove DNA polymerase from the template strand
d. anchor primase to the template strand
e. bind to single stranded DNA to stabilize it before it is replicated
ANSWER: b
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Consider the data in Fig. 46.11 illustrating the survivorship curve of the Lime Swallowtail butterfly. As indicated in your text, the survivorship from the egg to larval stage is 68%
Calculate the survivorship from the larval to pupal stage
Which of the following is a high-resolution light microscope technique for detecting interactions between proteins?
a. FRAP (fluorescence recovery after photobleaching) b. FRET (fluorescence resonance energy transfer) c. MPEM (multi-photon excitation microscopy) d. TIRF (total internal reflection)
Exotoxins are
A) secreted and only made by Gram-positive bacteria. B) secreted and the targets of some childhood vaccines. C) secreted. D) only made by Gram-positive bacteria. E) the targets of some childhood vaccines.
Treatment of Clostridium difficile with fecal material from a healthy donor results in
a. 90% cure rate with no relapse. b. 90% cure rate with possible relapse. c. 25% cure rate with no relapse. d. 25% cure rate with possible relapse.