These medical condition or symptom topics may be relevant to medical information for Orchialgia: 1  Pain (6458 causes) 2  Pain symptoms (6458 causes) 3  Pain disorder.  Pain 1  syndrome. Testis.  Testis symptoms (247 1  causes) Testis disorder.  SYN. Orchalgia.
The innermost matrix of chloroplasts, called the stroma, contains metabolic enzymes and multiple copies of the chloroplast genome. Chloroplasts also have a third internal membrane called the thylakoid membrane, which is extensively folded and appears as stacks of flattened disks in electron micrographs.
Chloroplasts contain the thylakoid membrane, which holds the pigment protein complexes, known as LHC, light-harvesting complexes, I and II. The tightly spaced regions in the thylakoid membrane, known as grana, hold predominantly LHCII, which is the most abundant pigment-protein complex in green plants.