LIFE SCIENCE

Detailed explanation-1: -The bacterium E. coli requires simple organic molecules for growth and energy-it is therefore a: B) chemoheterotroph. (It is a chemoheterotoph because it uses ORGANIC materials.

Detailed explanation-2: -E. coli is a chemoheterotroph capable of growing on any of a large number of sugars or amino acids provided individually or in mixtures. Some strains found in nature have single auxotrophic requirements, among them thiamin is common.

Detailed explanation-3: -Examples of Chemoheterotrophs All animals, including humans, fungi such as mushrooms, and many bacteria such as E. coli and archaea in the hydrothermal vents are examples of chemoheterotrophs.

Detailed explanation-4: -Most chemoheterotrophs obtain energy by ingesting organic molecules like glucose. In contrast, chemoautotrophs are autotrophs that use chemical energy to produce carbohydrates.

Detailed explanation-5: -Chemoheterotrophs are organisms that get their energy source and carbon source from organic sources. Chemoheterotrophs must consume organic building blocks that they are unable to make themselves. Most get their energy from organic molecules such as sugars.