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Jessy G.
Senior Student at UMBC
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Basic Chemistry
TutorMe
Question:

586g of Bromine is occupying 188mL. Calculate its density in g/mL.

Jessy G.
Answer:

3.12g/mL. Density equals mass divided by volume.

Biology
TutorMe
Question:

When a virus enters a cell, what is the difference between a replication lytic cycle and lysogeny?

Jessy G.
Answer:

During the lytic cycle, after the virus attaches and releases its genetic material inside the cell its genome is transcribed by the host cell and produces viral proteins. The viral genome is then replicated and viral particles are assembled inside the host cell. Through chemical signaling, the host cell is lysed and the new virions are released into the environment to infect new host cells. During lysogeny, the virus attaches to the host cell and integrates its genome with the host cell's genome. The host cell DNA polymerase copies chromosome and virus goes into latency or continues to the replication cycle. The host cell is not lysed during lysogeny.

Anatomy
TutorMe
Question:

In the heart muscle, what is the order of stimulation in the nodal pathway that causes the heart to contract?

Jessy G.
Answer:

The stimulation of the nodal pathways begins with the sinoatrial node located in the right atrium and then continues to the Atrioventricular node located at the interatrial septum close to the tricuspid valve. Next, the Atrioventricular Bundle is stimulated followed by the Purkinje fibers that are along the ventricles' walls.

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