What crucial role does RNA play in the RNA world hypothesis?
Only genetic information storage
Only catalysis
Both genetic information storage and catalysis
Structural support
Related Questions
Which of the following is considered a potential precursor to RNA in the RNA world hypothesis?
Deoxyribonucleic acid (DNA)
Proteins
Peptide nucleic acid (PNA)
Lipids
Why do RNA viruses, particularly those with short lifespans, tend to evolve more rapidly than DNA viruses?
Lower mutation rate in RNA and longer life span
Higher mutation rate in RNA and shorter life span
Lower mutation rate in DNA and shorter life span
Similar mutation rates in RNA and DNA
Which of the following contributes to the faster evolution of RNA viruses?
High mutation rate during replication
Presence of a DNA intermediate
Slower replication rate
Complex capsid structure
The RNA world hypothesis proposes that RNA was the primary genetic material in early life. Which of the following properties of RNA supports this hypothesis?
RNA is more stable than DNA.
RNA can act as both a carrier of genetic information and a catalytic enzyme.
RNA is double-stranded, providing redundancy in genetic information.
RNA cannot be degraded by enzymes.
The RNA world hypothesis suggests that self-replicating RNA molecules were crucial for the origin of life. What is a major challenge to the idea of self-replicating RNA?
RNA's inherent stability
The simplicity of RNA's structure
The abundance of free nucleotides in early Earth environments
The complexity of RNA replication without enzymatic assistance
Ribozymes are an important piece of evidence supporting the RNA world hypothesis. What is the primary function of a ribozyme?
Storing genetic information
Transporting amino acids
Catalyzing biochemical reactions
Forming cell membranes
Which feature of some RNA molecules supports their potential role as early catalysts?
Linear, unfolded structure
Inability to bind to other molecules
Specific three-dimensional structures
Lack of chemical reactivity
A diploid cell undergoes a type of cell division resulting in four haploid cells. This process is known as:
Mitosis
Meiosis
Binary fission
Budding
If a virus has an RNA genome, which characteristic would you MOST likely expect it to exhibit?
Slow evolution
High genomic stability
Long lifespan
Rapid evolution
