In cellular respiration, oxygen acts as the final electron acceptor in aerobic respiration, while organic or inorganic molecules can serve as electron acceptors in anaerobic respiration and fermentation.
The molecules that serve as electron acceptors in cellular respiration play a crucial role in the generation of ATP. In aerobic respiration, the final electron acceptor is an oxygen molecule (O₂), which allows for the production of ATP by transferring high-energy electrons from NADH or FADH₂ through the electron transport chain (ETC). When insufficient oxygen is present, organisms must employ alternative mechanisms such as fermentation or anaerobic cellular respiration, whereby organic or inorganic molecules other than oxygen act as the final electron acceptors to regenerate NAD⁺ from NADH, allowing processes like glycolysis to continue.
In the absence of oxygen, some microorganisms, like methanogens and sulfur bacteria, perform anaerobic respiration using inorganic molecules like carbon dioxide and sulfate to regenerate NAD⁺. This process is critical for enabling energy conversion in environments where oxygen is scarce.
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b. thorax, appendages and spiracles
c. head, cephalothorax and appendages
d. head, thorax and abdomen
B. a form of precipitation
C. a step in the water cycle
D. the amount of water dissolved in the air
Traits are inherited as a tetrad.
Traits are inherited as homologous pairs.
Traits are inherited as a set, from one parent.
Answer:
a
Explanation:
a. kinetic energy.
b. mechanical energy.
c. chemical potential energy.
d. electromagnetic energy.
User: An example of a fossil fuel is
a. wood.
b. petroleum.
c. the sun.
d. water.
Answer:
chemical potential energy
Explanation:
Chlorofluorocarbons
DDT
Chlorofluorocarbon (CFC) is used as the aerosol propellant. An aerosol is a suspension in the gaseous form of solid or liquid particles. When these compounds reach the stratosphere, UV light affects them and they release chlorine atoms. Chlorine atoms are capable of breaking down ozone molecules. With fewer ozone molecules, the ozone layer becomes thinner and harmful UV light passes through it.
The correct answer is B. Chlorofluorocarbons.
I took the test in K12 so I am 100% percent positive
Answer: Homeostasis allows organisms to regulate their temperature
Explanation: