MCQ
In mammals, the corpus callosum connects
- ABone to a muscle
- BBone to a bone
- ✓The two cerebral hemispheres
- DThe two optic lobes
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$(i)$ Fleming, Chain and Florey were awarded the Nobel prize in $1945$
$(ii)$ Antibiotics have greatly improved our capacity to treat deadly diseases
$(iii)$ Penicillin was used to treat American soldiers wounded in World War I
Reason: Immune system weakens during $HIV$ infection.