TYPE OF MULTIPLE CHOICE QUESTIONS

Select the statement(s) that apply to both DNA replication and RNA transcription. Separation of the DNA strands (“unzipping”) A requirement for a primer Directionality of synthesis Base-pairing of complementary nucleotides Energy to drive the process is provided by triphosphate nucleotides   Answer : All statements are common to both DNA replication and transcription except : […]

ROLE OF HORMONES

OVERVIEW: Hormones are special chemical messengers in the body that are produced in the endocrine glands. These messengers control major body functions, from simple basic needs like hunger to complex systems like reproduction, and even the emotions and mood. LIST OF HORMONES ROLE IN HUMAN BODY : 1) Melatonin – Think of melatonin as your […]

BATCH CULTURE IN MICROBIOLOGY

OVERVIEW: Microbial culture processes that are used in industrial applications can be explained with three models of fermentation: -batch -continuous -fed batch fermentations. BATCH FERMENTATION: A batch fermentation system is called as a “closed system”. At time t=0, the sterilized nutrient solution in the fermenter is inoculated with microorganisms and incubation is proceeded at a […]

GREENHOUSE EFFECT : THREE KEY GREENHOUSE GASES AND HOW DO THEY DIFFER IN ATMOSPHERIC LIFETIMES

Except water vapour, the 3 key greenhouse gases are carbon dioxide (CO2), methane (CH4) and the halocarbons or CFCs (gases containing fluorine, chlorine and bromine). HOW DO THEY DIFFER IN ATMOSPHERIC LIFETIMES : The lifetime of CO2 is most difficult to determine, because there are many processes that remove CO2 from the atmosphere. Between 65% […]