The blood passes through our body in a sytem called the circulatory system. we have a double circulatory system. why is it called this and what are the two pathways that blood takes?

We call it

Double circulation bcoz their are 3 circulation exist between heart, lungs and body organs.

EXPLANATION :

Flow of blood is left to right

1. Pulmonary circulation

Right ventricle -pulmonary artry - lungs - pulmonary veins - left artria

2. Systemic circulation

Left ventricle - systemic artry - body organs - systemic veins- right artria

because they want 2 and yea

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products