Common Diseases In Human Beings

Alzheimer's disease affects old (elderly). Alzheimer's disease is a progressive neurodegenerative disorder that primarily affects the brain, particularly regions that are involved in memory, cognitive and behaviour. 

Features of Alzheimer disease is as follows: 

Neurons: the diseases will lead to degeneration and death of the nerve cells. This is mainly in the region such as the hippocampus and cerebral cortex etc. 

Amyloid plaques: The abnormal proteins called as amyloid plaques is one of the hallmarks of the diseases. They are formed between neurons and disrupt normal brain function. 

Memory impairment: One of the common symptoms is memory loss. The disease will further lead to impairment in the language, judgement, reasoning etc. 

Currently there is no cure of Alzheimer’s disease, but there are treatments available and there are interventions that can manage and reduce the symptoms. Early diagnosis will help in the proper medication and care of the patients.

Read more:Nervous System Diseases

Tetracycline, neomycin and streptomycin are aminoglycosides and act on Gram negative bacteria (having no cell wall) where as lactum antibiotics (amoxicillin, penicillin) acts on Gram positive bacteria having cell wall.

Therefore, the correct option is (A): -lactum group