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
Related Questions
What are RNA molecules with catalytic activity called?
Enzymes
Ribozymes
Ribosomes
Deoxyribozymes
Ribozyme was discovered by
Kuhne
Duclaux
Cech
Altmann
A diploid cell undergoes a type of cell division resulting in four haploid cells. This process is known as:
Mitosis
Meiosis
Binary fission
Budding
A scientist isolates RNA from a eukaryotic cell. A significant portion of the isolated RNA is found to be associated with large protein complexes. Which type of RNA is this most likely to be?
mRNA
tRNA
rRNA
snRNA
Which of these is NOT a supporting argument for the RNA world hypothesis?
RNA's ability to self-replicate
RNA's catalytic properties
The existence of ribozymes
DNA's higher stability
Which process is essential for maintaining the chromosome number across generations in sexually reproducing organisms?
Mitosis
Meiosis
Binary Fission
Fragmentation
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
Which type of RNA is the most abundant in a typical animal cell?
mRNA
tRNA
rRNA
snRNA
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
Which prebiotic condition would have MOST significantly hindered the formation of stable RNA polymers in the early Earth environment?
An abundance of organic molecules like amino acids and nucleotides
The presence of clay minerals that can catalyze RNA polymerization
High concentrations of metal ions that catalyze RNA hydrolysis
Alternating cycles of wetting and drying
