Every cell must remove its wastes. this function is performed by a. the endoplasmic reticulum b. the lysosomes c. the cytoplasm d. the ribosomes

Which direction does the energy flow in this energy pyramid ?

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

How does the closing of the ductus arteriosus and ductus venosus alter circulation in an infant? a. increases blood flow to the pulmonary artery and increases blood flow to the umbilical vein b. increases blood flow to the pulmonary artery and reduces blood flow to the umbilical vein c. reduces blood flow to the pulmonary vein and increases blood flow to the umbilical artery d. reduces blood flow to the pulmonary vein and reduces blood flow to the umbilical artery