Question

1A. Which of the following could be used by a chemolithotroph for energy?

A. O₂

B. Glucose

C. H₂

D.H⁺

E. CO₂

1B. Bacteria that degrade complex organic molecules from dead or decaying organisms, returning simpler molecules into the ecosystem are________

A. Omnivores

B. Heterotrophs

C. Producers

D. Autotrophs

Answer 1

Answer 1A)

C) H2

A chemolithotroph is an organism that make use of inorganic reduced compounds as a source of energy. This mode of metabolism is called chemolithotrophy.Hydrogen is a product of geochemical reactions and microbial metabolism and chemolithotrophsmake use of it as electron donor in energy metabolism.

Answer 1 B)

B)Heterotrophs

bacteria that use the sugars they need to survive and reproduce from their environment and not make the sugars themselves from carbon and hydrogen is known as heterotrophic bacteria.

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