Which of the following correctly describes some aspect of exocytosis or endocytosis?
1. endocytosis and exocytosis involve active transport.
these two processes require the participation of mitochondria.
2. both processes provide a mechanism for exchanging membrane-impermeable molecules between the organelles and the cytosol.
3. exocytosis and endocytosis change the surface area of the plasma membrane.
4. the inner surface of a transport vesicle that fuses with or buds from the plasma membrane is most closely related to the inner surface of the plasma membrane.

Which characteristic should describe all evidence collected by a scientist? true obvious objective subjective

Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems

How do high-energy electrons from glycolysis and the krebs cycle contribute to the formation of atp from adp in the electron transport chain? a. high-energy electrons interact with pyruvic acid to create a phosphate bond with adp, forming atp. b. high-energy electrons supply the needed energy to synthesize atp from the lower-energy adp in the electron transport chain. c. high-energy electrons supply a negative charge which causes the citric acid to oxidize, forming a phosphate group to bond with adp. d. high-energy electrons increase the temperature of adp so it easily reacts to form atp.