DNA and RNA - Part 2

What is a key difference in the sugar component of RNA compared to DNA?

• RNA contains deoxyribose sugar, while DNA contains ribose sugar.

• RNA contains ribose sugar, while DNA contains deoxyribose sugar.

• RNA contains glucose sugar, while DNA contains fructose sugar.

• Both RNA and DNA contain the same type of sugar.

Which nitrogenous base is found in RNA but not in DNA?

• Adenine

• Guanine

• Cytosine

• Uracil

What is the primary outcome of DNA replication?

• The production of various protein molecules.

• The creation of two identical DNA double helices.

• The synthesis of messenger RNA from a DNA template.

• The formation of a single-stranded RNA molecule.

What is the primary role of DNA in the nucleus during gene expression?

• Directly synthesizing proteins.

• Serving as a template for mRNA synthesis.

• Transporting amino acids to ribosomes.

• Leaving the nucleus to carry genetic information to the cytoplasm.

Which of the following best describes the process of translation?

• DNA replication to produce new DNA strands.

• Synthesis of mRNA from a DNA template.

• Conversion of mRNA sequence into a polypeptide chain.

• Packaging of proteins into vesicles for transport.

A beaver's dam, constructed from branches and mud, is an example of what biological concept?

• Genotype.

• Mutation.

• Extended phenotype.

• Natural selection.

How is the process of transformation utilized in modern biotechnology to produce human insulin?

• By directly synthesizing insulin from human DNA in a test tube.

• By inserting the human insulin gene into bacteria or plants, which then produce the protein.

• By modifying human cells to overproduce insulin.

• By extracting insulin directly from animal pancreases.