The average volume of a red blood cell is 87μm3.87μm3. the mean concentration of hemoglobin in red blood cells is 0.34 g⋅ml−1.0.34 g⋅ml−1. what is the weight of the hemoglobin contained in an average red blood cell? hemoglobin weight: ×10 gg how many hemoglobin molecules are there in an average red blood cell? assume that the molecular weight of the human hemoglobin tetramer is 65 kda.65 kda. number of hemoglobin molecules: ×10 molecules

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.