The motor (somatic nervous) system can alter the activities of its targets, the skeletal muscle fibers, because ________.

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#Question id: 3995

#Unit 3. Fundamental Processes

Which is matched incorrectly?

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#Question id: 7528

#General Aptitude

A 220 metres long train running at the speed of 110 kilometer per hour process another train running in opposite direction at the speed of 70 km per hour in 7 seconds. what is the length of the other train?

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#Question id: 28273

#Unit 5. Developmental Biology

In sea urchins, the acrosome reaction is initiated by_____

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#Question id: 15617

#Unit 13. Methods in Biology

Wild type E. coli metabolizes the sugar lactose by expressing the enzyme ß-galactosidase. You have isolated a mutant that you call lac1–, which cannot synthesize ß-galactosidase and cannot grow on lactose (Lac–). During an condition you have a wild type (Lac+) strain carrying a Tn5 insertion known to be near several Lac genes on the E. coli chromosome. You grow P1 phage on this strain and use the resulting phage lysate to infect the lac1– strain, selecting for kanamycin resistance (Kanr). Among 100 Kanr transductants, you find that 82 are Lac– and 18 are Lac+. Express the distance between Tn5 and the lac1– mutation as a cotransduction frequency;

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#Question id: 4034

#Unit 3. Fundamental Processes

Which of the following would most likely occur if an in vitro transcription assay is performed using a cell extract containing an alpha subunit without the C-terminal domain?