An NFL quarterback threw a football from the 50 yard line to the end zone (50 yards) it took 4.5 seconds to get to his receiver. How fast did the quarterback throw the ball?

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

What is it called when part of a cell membrane closes around a molecule to allow the molecule to enter the cell? a. passive transport b. diffusion c. endocytosis d. exocytosisc. endocytosis

Abiologist counts the number of rabbits in a population each year and observes a decrease in population. since the coyote population has exploded, the biologist concludes that the coyote population has had a negative interaction with the rabbit population. which describes the biologist’s actions? a.) experimentationb.) inferencec.) observationd.) interacting