An Organism That Oxidizes H₂S to Gain Energy and Utilizes

question 30

Multiple Choice

An organism that oxidizes H₂S to gain energy and utilizes CO₂ as a carbon source (to generate carbohydrates) would be classified as a:

• A)photoautotroph.
• B)chemoautotroph.
• C)photoheterotroph.
• D)chemoheterotroph.

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Definitions:

Brain

The brain is the complex organ located in the skull that serves as the center of the nervous system in all vertebrate and most invertebrate animals, responsible for processing sensory information, regulating bodily functions, and enabling thought, memory, and emotion.

Spinal Cord

A long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column, transmitting neural signals between the brain and the body.

Stem Cells

Undifferentiated biological cells that can differentiate into specialized cells and can divide to produce more stem cells.

Early Embryos

The initial stages of development in an organism, following fertilization and before significant differentiation has occurred.