What path describes the movement of oxygenated blood leaving the heart? use the standard image of the heart to guide you. a) left atrium—> left ventricle—> aorta b) left ventricle—> left atrium—> pulmonary artery c) right atrium—> right ventricle—> pulmonary artery d) right ventricle—> right atrium —> aorta

Which best explains why viruses do not have special structures or enzymes that allow them to make their own food? viruses can use energy in living cells that they infect. viruses can replicate inside a host that they infect. viruses can cause contagious illnesses in host cells. viruses integrate their rna or dna into infected cells.

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

List two modern organisms that have pentameral symmetry