What relation exists between an enzyme and a catalyst. 1-Enzymes and catalysts play no role in chemical reactions.

2-Like catalysts, enzymes speed up chemical reactions by
increasing their activation energy.

3-Enzymes are biological catalysts.

4-Like catalysts, enzymes slow down chemical reactions.

Answer and I will give you brainiliest

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.

radon is correct hope this