Severe acute respiratory syndrome (SARS) is caused by SARS-associated coronavirus (SARS-CoV). The diagram shows the structure of SARS-CoV. SARS emerged as an infectious human disease in 2002. Several years of research have led to the conclusion that SARS-CoV originated in a single colony of bats. These bats served as a reservoir for a form of the virus which could not infect humans. SARS-CoV is hypothesized to have mutated in such a way that it gained the ability to infect humans.

In what way are the glycoproteins on SARS-CoV involved in its ability to infect humans?
A.
The glycoproteins help the virus move around the human respiratory tract so it can damage the lungs.
B.
The glycoproteins help the virus travel in the air so it can spread among humans.
C.
The glycoproteins interact with receptors on a human cell so the virus can enter the cell.
D.
The glycoproteins interact with a human cell's DNA replication machinery so the virus can replicate.

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Scenario 5 1) take 10 red and 10 black beans and place them, mixed, on the table. record the starting phenotype # and frequencies (% of your total population) of your starting population in the table provided (generation 0). 2) act as a predator. “capture” as many organisms as you can until you have reduced the population to three organisms. put them aside. at this point, the predators die. 3) the remaining organisms each produce 2 clonal offspring. multiply your organisms accordingly and allow them to mix on the table. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 1). 4) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 2). 5) repeat the reproduction event, allowing each of your organisms to produce 2 clonal offspring. calculate and record the resultant phenotype # and frequencies (% of your total population) of your population in the table provided (generation 3).

Match the reproductive structures based on their function and the system to which they belong. egg ovary sperm vas deferens vagina fallopian tube testis urethra