Biol 221 Lec 41 MCQ

Front

What is a second generation biofuel?

Back

Second generation biofuels are produced from non-food biomass, such as agricultural residues, wood, and algae, as opposed to first generation biofuels which are derived from food crops.

Front

What is the significance of 16S rRNA in microbial diagnostics?

Back

16S rRNA is a component of the ribosome in bacteria and is used as a molecular marker for identifying and classifying bacteria due to its conserved and variable regions.

Front

What are microbial fuel cells (MFCs)?

Back

Microbial fuel cells are devices that use bacteria to convert organic matter into electricity through biochemical reactions.

Front

How can the efficiency of microbial fuel cells be improved?

Back

Increasing bacterial production of pili and nanowires can enhance electron transfer and improve the efficiency of microbial fuel cells.

Front

What is the least efficient technology for producing combustible fuel from renewable sources?

Back

Ethanol from cellulosic sources is considered the least efficient technology for producing combustible fuel from renewable sources.

Front

Why is 1,3-Propanediol (PDO) important for biopolymers?

Back

1,3-Propanediol is important for biopolymers because it has improved elasticity compared to polyester, making it a desirable material for various applications.

Front

What is the role of redox mediators in microbial fuel cells?

Back

Redox mediators facilitate electron transfer between bacteria and the anode, potentially improving the efficiency of microbial fuel cells.

Front

What is the difference between first and second generation biofuels?

Back

First generation biofuels are made from food crops, while second generation biofuels are derived from non-food biomass.

Front

What is PCR and its application in microbial diagnostics?

Back

PCR (Polymerase Chain Reaction) is a technique used to amplify specific DNA sequences, allowing for the detection and identification of microorganisms.

Front

What does fluorescence in a diagnostic chip indicate?

Back

Fluorescence in a diagnostic chip indicates the presence of specific nucleic acid sequences, suggesting the presence of corresponding microorganisms.