The cell bodies of neurons controlling your feet are actually located in your spine. The cell body is where they make peptides such as the ones in this simulation. Their axons can be a meter long, traveling out to the tips of your toes (about 1,000 times as long as the 60 µm axon in the simulation). Do you think these neurons use diffusion to move peptides from the cell body to the axon tip? Explain your reasoning

Air pollution is only caused by human activity, select the best answer from the choices provided ot of true or false

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian

1. an enzyme is considered a(n) because it speeds up a chemical reaction without being used up.2. in a catalyzed reaction, a reactant is often called a(n) . an enzyme is specific because the shape of its matches only particular reactants.4. an enzyme speeds up reactions by lowering the . the between an active site and its substrate often strains bonds and the reaction proceed.6. a( , which is often a vitamin, binds to an enzyme and plays a role in catalysis.7. high temperatures or changes in ph can an enzyme, causing it to lose its shape and biological activity.