Weightlifters are often concerned with the amount of protein in their diets because growing muscles require protein. just as muscles need the basic building block of protein, protein itself also has basic building blocks. which of the following are the building blocks of protein?

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen

Everything in the universe originated from a single point. how was it possible for everything in the universe to have occupied a single point in space?

Some animals that live in the desert don't move often, if at all, during the day in order to conserve water and energy. this seasonal behavior is best described as which of the following?