Why do ribosomes attach to the endoplasmic reticulum
a.) the endoplasmic reticulum provides a greater surface area, thus increasing protein production and secretion
b.)the smooth endoplasmic reticulum packages and transports the proteins made by the ribosomes
c.)the ribosomes store water and the other materials on the endoplasmic reticulum
d.)the ribosomes store proteins that are not used by the endoplasmic reticulum

Which term best describes a community in which people work mostly in factories? a.agricultural. b.hunting and gathering. c.domesticated. industrial.

Alaska and northern canada have a diet rich in vitamin d and their skin color is darker than predicted on the basis of iv intensity at their latitude. explain the observation:

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).