What condition develops when serotonin levels in the brain are deficient?

A. insomnia
B. epilepsy
C. Alzheimer's disease
D. Parkinson's disease
E. Huntington's disease


A. insomnia

Biology & Microbiology

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Peptidoglycan is a compound in ____

a. bacterial flagella b. bacterial cell walls c. archaean cell walls d. archaean flagella e. eukaryote cell walls

Biology & Microbiology

The genetic difference between familial retinoblastoma and sporadic retinoblastoma appears to be based on those with the familial form starting out being ________, whereas those with the sporadic form start out being ________

Fill in the blank(s) with correct word

Biology & Microbiology

Interleukin-1 stimulates ________________, which activate the remainder of the T and B cell immune system responses.

A. B cells B. T cells C. helper T cells D. natural killer cells

Biology & Microbiology

The dengue viruses are spread by (fleas/mosquitoes/ticks).

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology