In photosynthesis, the electron that travels through the electron transport chain in the thylakoid membrane comes from . in cellular respiration, a molecule of supplies the electron that travels through the electron transport chain. 1. a. atp b. carbon dioxide c. water d. nadh 2. a. atp b. carbon dioxide c. water d. nadh there are two answers.

What is a group of organisms that are closely related and share similar characteristics

The source of energy shown in the image is (renewable, non renewable, polluting) a drawback of building a dam is that (it will destroy ecosystems, it requires fossil fuels, it won’t be useful for irrigation)

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.