When Photosynthesis Is Fully Operational Under Conditions of Intense Light

question 130

Essay

When photosynthesis is fully operational under conditions of intense light, the pH of the thylakoid lumen may be as much as three full pH units lower than the stroma of the chloroplast. Does this mean that the hydrogen ion concentration in the lumen is greater or less than that of the stroma? How many more hydrogen ions are on the side of the thylakoid membrane with the higher concentration compared to the side with the lower concentration?

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Definitions:

Olfactory Organ

The part of the body's anatomy responsible for detecting smells, primarily the nose and its related structures.

Sense

A faculty by which the body perceives an external stimulus, such as sight, sound, touch, taste, or smell.

Smell

A sensation or perception of odors or scents detected by the olfactory nerves in the nose, contributing to taste and the detection of hazards.

Malleus

The largest of the three bones of the middle ear, also called the hammer.