Quiz on Fundamentals of Molecular Biology

What is a gene?

• A sequence of RNA that codes for proteins

• A structure that carries genetic information

• A sequence of DNA that codes for RNA or a protein

• A type of protein that regulates gene expression

Who coined the term 'gene'?

• Gregor Mendel

• Wilhelm Johannsen

• James Watson

• Francis Crick

What is the basic structure of DNA?

• Linear molecule

• Double-stranded molecule with a helical structure

• Single-stranded molecule

• Circular molecule

What are the nitrogenous bases in DNA?

• Adenine, Guanine, Cytosine, and Uracil

• Adenine, Thymine, Cytosine, and Uracil

• Guanine, Cytosine, Thymine, and Uracil

• Adenine, Guanine, Cytosine, and Thymine

What is the role of the promoter sequence in a gene?

• To bind to repressor proteins

• To code for proteins

• To initiate gene expression

• To terminate gene expression

What is an operon?

• A single gene coding for a protein

• A type of RNA molecule

• A structure that carries genetic information

• A group of genes transcribed together

What is the function of a repressor protein?

• To enhance gene expression

• To code for structural proteins

• To bind to the operator and block transcription

• To initiate transcription

What is the purpose of recombinant DNA technology?

• To analyze protein structures

• To sequence DNA

• To produce new genetic combinations

• To clone genes

What is the first step in recombinant DNA technology?

• Cutting of DNA

• DNA isolation

• Insertion of rDNA into a host

• Joining DNA

What is the role of restriction enzymes in recombinant DNA technology?

• To cut DNA at specific locations

• To isolate DNA

• To amplify DNA

• To join DNA fragments