What is the name of the group of proteins that can speed up the process or reduce the activation energy of a reaction? a) enzymes b) lipids O c) ions d) vitamins Please help me

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.

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.

bacterium is not correct