Pancreatic cells, which secrete a large amount of digestive enzymes, are labeled with radioactive leucine and then chased for se
veral hours withnonradioactive leucine. Photographic emulsions are prepared at different times during the chase. Where would the black spots appear on an emulsionprepared 3 hours after the pulse? A- Rough ER
B- Secretory vesicles
C- Golgi apparatus
D- Exterior of the cell
Predators hunt prey. (Obviously). As such, they help control the population of that particular prey-species. If the predator species is removed from the equation, 2 times are changed. Long term & short term. Long term includes lower populations due to lack of resources. Short term includes overpopulation due to lack of threat.
