Both subjects are interrelated, that means you don't need to change your subject, Go with biochemistry it has very bright career options as well as you can do ms microbiology after doing bsc biochemistry.👍
Bsc microbiology er pore tumi qc analyst,qc technician r microbiologist hote parbe , er por msc microbiology r phd microbiology porle job er scope onektayi thakbe future