The difference in lipid and protein composition between the membranes of the endomembrane system is largely determined by
a) the physical separation of most membranes from each other.
b) the transportation of membrane among the endomembrane system by small
membrane vesicles.
c) the function of the golgi apparatus in sorting membrane components.
d) the modification of the membrane components once they reach their final destination.
e) the synthesis of lipids and proteins in each of the organelles of the endomembrane system

Organisms within a population must compete for resources to survive

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area