What parts of the lymphatic system are used as filters to catch bacteria in the inhaled air? a. bronchi b. epiglottis c. trachea d. tonsils

well we can't tell you because we cant see the time give a screen shot or something.

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

if you look up in the top right corner you'll see your current profile picture, click than click "view profile" you'll be able to change it there.