In an ecosystem, every food chain begins with organisms that can create organic molecules from inorganic molecules; most frequently, these organisms are

Leila has dimples because she received a gene copy from her father that coded for dimples. this means that dimples are an example of a trait that is

What is a photon? a. part of a ribosome b. a light particle c. a carbon dioxide molecule d. part of a chloroplast b.a light particle

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.