Hydrogen-oxidizing bacteria are the members of gram-negative bacteria, metabolism involves using hydrogen as an electron source and oxygen as a terminal electron acceptor, hence forming water.
Gram-negative genera Aquifex and hydrogenobacter stand for "water-maker" to indicate hydrogen oxidation and terminal electron transfer to oxygen. They are chemoautotrophs, that share the ability to oxidize H₂ and fix CO₂ to provide energy and synthesize cellular material. Applicatated for resource recovery and pollution removal.
They are known to grow at the highest temperature and grow usually at neutral or slightly acidic pH. These microorganisms use CO₂ assimilation pathways. They are metabolically versatile chemolithoautotrophs, using reductive tricarboxylic acid (rTCA) cycle.
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Answer:
Endocrine system and Nervous system
Explanation:
Endocrine system and nervous system together work to regulate the behaviour of individuals. In general, sex hormones testosterone and estrogen are responsible for gender specific behavioral differences among males and females. The hormones of adrenal gland determine the behaviour of person under stress conditions. Adrenal gland secretes hormones epinephrine and norepinephrine. These hormones target the sympathetic and parasympathetic division of autonomous nervous system to regulate behaviour of person.
The best answer would be E.
Both are examples of food consumption:)
I believe the answer is A
