The valve regulates the flow of blood between the right ventricle and the vessels leading to the lungs.

The study of interaction between living organisms and their enviroment is called (a) phytogeography (b) ecology (c) phytosociology (d) ecosystem

Which organelles are labeled d, and what is one feature that distinguishes them from the other labeled organelles chloroplasts the only organelles that produce sugars from sunlight mosomes, only found in animal and bacterial cells centricles only found in animal cells mitochondra, the only energo-generating structures found in cells

The reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?