Which substance in prokaryotes contains sulfur?
a. dna
b. phospholipids
c. proteins
d. antibiotics

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus

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.