The pH scale is a logarithmic one, meaning that each pH unit has 10 times as many hydrogen ions as the unit above it. So, at pH 4, there are 10 times more hydrogen ions than at pH 5 and 100 times more hydrogen ions than at pH 6.
Answer: Option C
Explanation:
All the communicable diseases are contagious. They spread from one person to another person.
They are transmitted by the common routines that we do in our daily life like sharing some stuffs, sharing the towels, using smart phones of some other person, sneezing, coughing, et cetera.
These diseases are common cold, flu which is transferred from one person to another.
Answer:
The correct answer would be B) produces water.
Aerobic respiration is a type of respiration in which oxygen is used as the final acceptor of the electrons in an electron transport chain.
It usually takes place in mitochondria of a cell except for glycolysis part which takes place in the cytoplasm.
In this respiration, carbon in glucose is oxidized to produce carbon dioxide whereas oxygen is reduced to form water.
H₂ + 1/2 O₂ →H₂O
In contrast, anaerobic respiration usually occurs in the cytoplasm and results in the formation of lactic acid or ethanol and ATP.
A photon of light hits chlorophyll, causing an electron to be energized.
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