Purchase Solution

Cell Biology Homework

Not what you're looking for?

Ask Custom Question

1. When DNA samples A and B were separated by buoyant density centrifugation the two samples migrated 23 and 15 cm, respectively. If DNA B had a GC content of 34%, what was the GC content of DNA A?

2. If Meselson and Stahl found that the ratio of 15N-labeled single-strands to 14N-labeled single-strands was 2:6 in the second generation, what would be the ratios for the fourth and fifth generations?

3. In the first generation of growth on 15N containing media, a single band of DNA having an intermediate density was detected by buoyant density centrifugation using a neutral CsCl gradient. If the dispersive model of replication was true, what result would have been seen? What would be the result in the second generation? How would that compare to the semi-conservative model?

Purchase this Solution

Purchase this Solution

Free BrainMass Quizzes
Feeding Babies

Do you know the science behind feeding babies? Test your knowledge with this quiz.

Identifying Variables in Science Experiments, Part 2

Using sample experiments, test yourself to see if you can identify independent, dependent, and controlled variables. Identifying variables is key in understanding and developing experiments. The questions are biology related, but this can be applied to any area of science.

The Plant Body

This quiz will test your knowledge of the anatomy of a common plant.

BioChemistry Basics

This Quiz will test your knowledge of the amino acids used in biological systems

Infant Development: Sleep

How much do you know about infant sleep? Test your knowledge with this quiz.