The evolution of membrane-bound organelles in eukaryotic cells resulted in many benefits to the cell. Describe three membrane-bound organelles, and explain their functions.

The mitochondrion is a membrane-bound organelle that provides energy by ATP synthesis (oxidative phosphorylation)

The lysosome contains about 40 hydrolytic enzymes that help with cellular digestion.

The Golgi apparatus plays an important role in the excretion and packaging of vesicles.

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.