In cell movement, branched actin filament growth pushes against the cell membrane. Proteins involved in this process include all of the following except

a. Arp2/3
b. profilin
c. vinculin
d. WASP/Scar


Ans: c. vinculin

Biology & Microbiology

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Integrase

A. is required for prophage formation. B. cuts viral genomes. C. is required for genome entry into the bacteria. D. is required for provirus formation. E. cuts the viral genome and is required for both prophage and provirus formation

Biology & Microbiology

This hemorrhagic fever causes disease in humans and nonhuman primates such as chimpanzees, gorillas, and monkeys. It is identified in the laboratory using which type of assay?

a. Immunodiffusion b. Peptide nucleic acid fluorescence in situ hybridization (PNA-FISH) c. Transcription-mediated amplification (TMA) d. Reverse-transcriptase polymerase chain reaction (PCR)

Biology & Microbiology

Two genes are on the same chromosome, yet crossing over occurs between them every time meiosis

occurs. Are these genes linked or unlinked and why?

What will be an ideal response?

Biology & Microbiology

The progesterone receptor (PR) is a steroid hormone receptor and transcription factor. The protein SRC-1, which does not bind DNA by itself, can bind to PR and increase expression of genes regulated by PR. Based on this information, SRC-1 is best described as a(n)

A. inducer. B. general transcription factor. C. specific transcription factor. D. coactivator.

Biology & Microbiology